21317280

素因数分解:

$2^5\times 3^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{499}}^1$

素因数の和:606

約数の個数: 96

約数和(自身を含む): 68040000

約数和(自身を除く): 46722720

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 80, 89, 96, 120, 160, 178, 240, 267, 356, 445, 480, 499, 534, 712, 890, 998, 1068, 1335, 1424, 1497, 1780, 1996, 2136, 2495, 2670, 2848, 2994, 3560, 3992, 4272, 4990, 5340, 5988, 7120, 7485, 7984, 8544, 9980, 10680, 11976, 14240, 14970, 15968, 19960, 21360, 23952, 29940, 39920, 42720, 44411, 47904, 59880, 79840, 88822, 119760, 133233, 177644, 222055, 239520, 266466, 355288, 444110, 532932, 666165, 710576, 888220, 1065864, 1332330, 1421152, 1776440, 2131728, 2664660, 3552880, 4263456, 5329320, 7105760, 10658640, 21317280]

約数ペア:

[(1, 21317280), (2, 10658640), (3, 7105760), (4, 5329320), (5, 4263456), (6, 3552880), (8, 2664660), (10, 2131728), (12, 1776440), (15, 1421152), (16, 1332330), (20, 1065864), (24, 888220), (30, 710576), (32, 666165), (40, 532932), (48, 444110), (60, 355288), (80, 266466), (89, 239520), (96, 222055), (120, 177644), (160, 133233), (178, 119760), (240, 88822), (267, 79840), (356, 59880), (445, 47904), (480, 44411), (499, 42720), (534, 39920), (712, 29940), (890, 23952), (998, 21360), (1068, 19960), (1335, 15968), (1424, 14970), (1497, 14240), (1780, 11976), (1996, 10680), (2136, 9980), (2495, 8544), (2670, 7984), (2848, 7485), (2994, 7120), (3560, 5988), (3992, 5340), (4272, 4990)]