21000575220

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{127}}^1\times {\mathrm{2755981}}^1$

素因数の和:2756120

約数の個数: 48

約数和(自身を含む): 59264636928

約数和(自身を除く): 38264061708

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 127, 254, 381, 508, 635, 762, 1270, 1524, 1905, 2540, 3810, 7620, 2755981, 5511962, 8267943, 11023924, 13779905, 16535886, 27559810, 33071772, 41339715, 55119620, 82679430, 165358860, 350009587, 700019174, 1050028761, 1400038348, 1750047935, 2100057522, 3500095870, 4200115044, 5250143805, 7000191740, 10500287610, 21000575220]

約数ペア:

[(1, 21000575220), (2, 10500287610), (3, 7000191740), (4, 5250143805), (5, 4200115044), (6, 3500095870), (10, 2100057522), (12, 1750047935), (15, 1400038348), (20, 1050028761), (30, 700019174), (60, 350009587), (127, 165358860), (254, 82679430), (381, 55119620), (508, 41339715), (635, 33071772), (762, 27559810), (1270, 16535886), (1524, 13779905), (1905, 11023924), (2540, 8267943), (3810, 5511962), (7620, 2755981)]