641964120

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{277}}^1$

素因数の和:418

約数の個数: 256

約数和(自身を含む): 2305843200

約数和(自身を除く): 1663879080

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 31, 35, 40, 42, 56, 60, 62, 70, 84, 89, 93, 105, 120, 124, 140, 155, 168, 178, 186, 210, 217, 248, 267, 277, 280, 310, 356, 372, 420, 434, 445, 465, 534, 554, 620, 623, 651, 712, 744, 831, 840, 868, 890, 930, 1068, 1085, 1108, 1240, 1246, 1302, 1335, 1385, 1662, 1736, 1780, 1860, 1869, 1939, 2136, 2170, 2216, 2492, 2604, 2670, 2759, 2770, 3115, 3255, 3324, 3560, 3720, 3738, 3878, 4155, 4340, 4984, 5208, 5340, 5518, 5540, 5817, 6230, 6510, 6648, 7476, 7756, 8277, 8310, 8587, 8680, 9345, 9695, 10680, 11036, 11080, 11634, 12460, 13020, 13795, 14952, 15512, 16554, 16620, 17174, 18690, 19313, 19390, 22072, 23268, 24653, 24920, 25761, 26040, 27590, 29085, 33108, 33240, 34348, 37380, 38626, 38780, 41385, 42935, 46536, 49306, 51522, 55180, 57939, 58170, 60109, 66216, 68696, 73959, 74760, 77252, 77560, 82770, 85870, 96565, 98612, 103044, 110360, 115878, 116340, 120218, 123265, 128805, 147918, 154504, 165540, 171740, 172571, 180327, 193130, 197224, 206088, 231756, 232680, 240436, 246530, 257610, 289695, 295836, 300545, 331080, 343480, 345142, 360654, 369795, 386260, 463512, 480872, 493060, 515220, 517713, 579390, 591672, 601090, 690284, 721308, 739590, 764243, 772520, 862855, 901635, 986120, 1030440, 1035426, 1158780, 1202180, 1380568, 1442616, 1479180, 1528486, 1725710, 1803270, 2070852, 2292729, 2317560, 2404360, 2588565, 2958360, 3056972, 3451420, 3606540, 3821215, 4141704, 4585458, 5177130, 5349701, 6113944, 6902840, 7213080, 7642430, 9170916, 10354260, 10699402, 11463645, 15284860, 16049103, 18341832, 20708520, 21398804, 22927290, 26748505, 30569720, 32098206, 42797608, 45854580, 53497010, 64196412, 80245515, 91709160, 106994020, 128392824, 160491030, 213988040, 320982060, 641964120]

約数ペア:

[(1, 641964120), (2, 320982060), (3, 213988040), (4, 160491030), (5, 128392824), (6, 106994020), (7, 91709160), (8, 80245515), (10, 64196412), (12, 53497010), (14, 45854580), (15, 42797608), (20, 32098206), (21, 30569720), (24, 26748505), (28, 22927290), (30, 21398804), (31, 20708520), (35, 18341832), (40, 16049103), (42, 15284860), (56, 11463645), (60, 10699402), (62, 10354260), (70, 9170916), (84, 7642430), (89, 7213080), (93, 6902840), (105, 6113944), (120, 5349701), (124, 5177130), (140, 4585458), (155, 4141704), (168, 3821215), (178, 3606540), (186, 3451420), (210, 3056972), (217, 2958360), (248, 2588565), (267, 2404360), (277, 2317560), (280, 2292729), (310, 2070852), (356, 1803270), (372, 1725710), (420, 1528486), (434, 1479180), (445, 1442616), (465, 1380568), (534, 1202180), (554, 1158780), (620, 1035426), (623, 1030440), (651, 986120), (712, 901635), (744, 862855), (831, 772520), (840, 764243), (868, 739590), (890, 721308), (930, 690284), (1068, 601090), (1085, 591672), (1108, 579390), (1240, 517713), (1246, 515220), (1302, 493060), (1335, 480872), (1385, 463512), (1662, 386260), (1736, 369795), (1780, 360654), (1860, 345142), (1869, 343480), (1939, 331080), (2136, 300545), (2170, 295836), (2216, 289695), (2492, 257610), (2604, 246530), (2670, 240436), (2759, 232680), (2770, 231756), (3115, 206088), (3255, 197224), (3324, 193130), (3560, 180327), (3720, 172571), (3738, 171740), (3878, 165540), (4155, 154504), (4340, 147918), (4984, 128805), (5208, 123265), (5340, 120218), (5518, 116340), (5540, 115878), (5817, 110360), (6230, 103044), (6510, 98612), (6648, 96565), (7476, 85870), (7756, 82770), (8277, 77560), (8310, 77252), (8587, 74760), (8680, 73959), (9345, 68696), (9695, 66216), (10680, 60109), (11036, 58170), (11080, 57939), (11634, 55180), (12460, 51522), (13020, 49306), (13795, 46536), (14952, 42935), (15512, 41385), (16554, 38780), (16620, 38626), (17174, 37380), (18690, 34348), (19313, 33240), (19390, 33108), (22072, 29085), (23268, 27590), (24653, 26040), (24920, 25761)]