81882780

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{331}}^1$

素因数の和:400

約数の個数: 192

約数和(自身を含む): 285573120

約数和(自身を除く): 203690340

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 19, 20, 21, 28, 30, 31, 35, 38, 42, 57, 60, 62, 70, 76, 84, 93, 95, 105, 114, 124, 133, 140, 155, 186, 190, 210, 217, 228, 266, 285, 310, 331, 372, 380, 399, 420, 434, 465, 532, 570, 589, 620, 651, 662, 665, 798, 868, 930, 993, 1085, 1140, 1178, 1302, 1324, 1330, 1596, 1655, 1767, 1860, 1986, 1995, 2170, 2317, 2356, 2604, 2660, 2945, 3255, 3310, 3534, 3972, 3990, 4123, 4340, 4634, 4965, 5890, 6289, 6510, 6620, 6951, 7068, 7980, 8246, 8835, 9268, 9930, 10261, 11585, 11780, 12369, 12578, 13020, 13902, 16492, 17670, 18867, 19860, 20522, 20615, 23170, 24738, 25156, 27804, 30783, 31445, 34755, 35340, 37734, 41044, 41230, 44023, 46340, 49476, 51305, 61566, 61845, 62890, 69510, 71827, 75468, 82460, 88046, 94335, 102610, 123132, 123690, 125780, 132069, 139020, 143654, 153915, 176092, 188670, 194959, 205220, 215481, 220115, 247380, 264138, 287308, 307830, 359135, 377340, 389918, 430962, 440230, 528276, 584877, 615660, 660345, 718270, 779836, 861924, 880460, 974795, 1077405, 1169754, 1320690, 1364713, 1436540, 1949590, 2154810, 2339508, 2641380, 2729426, 2924385, 3899180, 4094139, 4309620, 5458852, 5848770, 6823565, 8188278, 11697540, 13647130, 16376556, 20470695, 27294260, 40941390, 81882780]

約数ペア:

[(1, 81882780), (2, 40941390), (3, 27294260), (4, 20470695), (5, 16376556), (6, 13647130), (7, 11697540), (10, 8188278), (12, 6823565), (14, 5848770), (15, 5458852), (19, 4309620), (20, 4094139), (21, 3899180), (28, 2924385), (30, 2729426), (31, 2641380), (35, 2339508), (38, 2154810), (42, 1949590), (57, 1436540), (60, 1364713), (62, 1320690), (70, 1169754), (76, 1077405), (84, 974795), (93, 880460), (95, 861924), (105, 779836), (114, 718270), (124, 660345), (133, 615660), (140, 584877), (155, 528276), (186, 440230), (190, 430962), (210, 389918), (217, 377340), (228, 359135), (266, 307830), (285, 287308), (310, 264138), (331, 247380), (372, 220115), (380, 215481), (399, 205220), (420, 194959), (434, 188670), (465, 176092), (532, 153915), (570, 143654), (589, 139020), (620, 132069), (651, 125780), (662, 123690), (665, 123132), (798, 102610), (868, 94335), (930, 88046), (993, 82460), (1085, 75468), (1140, 71827), (1178, 69510), (1302, 62890), (1324, 61845), (1330, 61566), (1596, 51305), (1655, 49476), (1767, 46340), (1860, 44023), (1986, 41230), (1995, 41044), (2170, 37734), (2317, 35340), (2356, 34755), (2604, 31445), (2660, 30783), (2945, 27804), (3255, 25156), (3310, 24738), (3534, 23170), (3972, 20615), (3990, 20522), (4123, 19860), (4340, 18867), (4634, 17670), (4965, 16492), (5890, 13902), (6289, 13020), (6510, 12578), (6620, 12369), (6951, 11780), (7068, 11585), (7980, 10261), (8246, 9930), (8835, 9268)]