256191840

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{1999}}^1$

素因数の和:2109

約数の個数: 144

約数和(自身を含む): 884520000

約数和(自身を除く): 628328160

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 45, 48, 60, 72, 80, 89, 90, 96, 120, 144, 160, 178, 180, 240, 267, 288, 356, 360, 445, 480, 534, 712, 720, 801, 890, 1068, 1335, 1424, 1440, 1602, 1780, 1999, 2136, 2670, 2848, 3204, 3560, 3998, 4005, 4272, 5340, 5997, 6408, 7120, 7996, 8010, 8544, 9995, 10680, 11994, 12816, 14240, 15992, 16020, 17991, 19990, 21360, 23988, 25632, 29985, 31984, 32040, 35982, 39980, 42720, 47976, 59970, 63968, 64080, 71964, 79960, 89955, 95952, 119940, 128160, 143928, 159920, 177911, 179910, 191904, 239880, 287856, 319840, 355822, 359820, 479760, 533733, 575712, 711644, 719640, 889555, 959520, 1067466, 1423288, 1439280, 1601199, 1779110, 2134932, 2668665, 2846576, 2878560, 3202398, 3558220, 4269864, 5337330, 5693152, 6404796, 7116440, 8005995, 8539728, 10674660, 12809592, 14232880, 16011990, 17079456, 21349320, 25619184, 28465760, 32023980, 42698640, 51238368, 64047960, 85397280, 128095920, 256191840]

約数ペア:

[(1, 256191840), (2, 128095920), (3, 85397280), (4, 64047960), (5, 51238368), (6, 42698640), (8, 32023980), (9, 28465760), (10, 25619184), (12, 21349320), (15, 17079456), (16, 16011990), (18, 14232880), (20, 12809592), (24, 10674660), (30, 8539728), (32, 8005995), (36, 7116440), (40, 6404796), (45, 5693152), (48, 5337330), (60, 4269864), (72, 3558220), (80, 3202398), (89, 2878560), (90, 2846576), (96, 2668665), (120, 2134932), (144, 1779110), (160, 1601199), (178, 1439280), (180, 1423288), (240, 1067466), (267, 959520), (288, 889555), (356, 719640), (360, 711644), (445, 575712), (480, 533733), (534, 479760), (712, 359820), (720, 355822), (801, 319840), (890, 287856), (1068, 239880), (1335, 191904), (1424, 179910), (1440, 177911), (1602, 159920), (1780, 143928), (1999, 128160), (2136, 119940), (2670, 95952), (2848, 89955), (3204, 79960), (3560, 71964), (3998, 64080), (4005, 63968), (4272, 59970), (5340, 47976), (5997, 42720), (6408, 39980), (7120, 35982), (7996, 32040), (8010, 31984), (8544, 29985), (9995, 25632), (10680, 23988), (11994, 21360), (12816, 19990), (14240, 17991), (15992, 16020)]