21212760

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{4111}}^1$

素因数の和:4168

約数の個数: 64

約数和(自身を含む): 65134080

約数和(自身を除く): 43921320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 43, 60, 86, 120, 129, 172, 215, 258, 344, 430, 516, 645, 860, 1032, 1290, 1720, 2580, 4111, 5160, 8222, 12333, 16444, 20555, 24666, 32888, 41110, 49332, 61665, 82220, 98664, 123330, 164440, 176773, 246660, 353546, 493320, 530319, 707092, 883865, 1060638, 1414184, 1767730, 2121276, 2651595, 3535460, 4242552, 5303190, 7070920, 10606380, 21212760]

約数ペア:

[(1, 21212760), (2, 10606380), (3, 7070920), (4, 5303190), (5, 4242552), (6, 3535460), (8, 2651595), (10, 2121276), (12, 1767730), (15, 1414184), (20, 1060638), (24, 883865), (30, 707092), (40, 530319), (43, 493320), (60, 353546), (86, 246660), (120, 176773), (129, 164440), (172, 123330), (215, 98664), (258, 82220), (344, 61665), (430, 49332), (516, 41110), (645, 32888), (860, 24666), (1032, 20555), (1290, 16444), (1720, 12333), (2580, 8222), (4111, 5160)]