21243036

素因数分解:

$2^2\times 3^1\times {\mathrm{53}}^1\times {\mathrm{127}}^1\times {\mathrm{263}}^1$

素因数の和:450

約数の個数: 48

約数和(自身を含む): 51093504

約数和(自身を除く): 29850468

約数列:

[1, 2, 3, 4, 6, 12, 53, 106, 127, 159, 212, 254, 263, 318, 381, 508, 526, 636, 762, 789, 1052, 1524, 1578, 3156, 6731, 13462, 13939, 20193, 26924, 27878, 33401, 40386, 41817, 55756, 66802, 80772, 83634, 100203, 133604, 167268, 200406, 400812, 1770253, 3540506, 5310759, 7081012, 10621518, 21243036]

約数ペア:

[(1, 21243036), (2, 10621518), (3, 7081012), (4, 5310759), (6, 3540506), (12, 1770253), (53, 400812), (106, 200406), (127, 167268), (159, 133604), (212, 100203), (254, 83634), (263, 80772), (318, 66802), (381, 55756), (508, 41817), (526, 40386), (636, 33401), (762, 27878), (789, 26924), (1052, 20193), (1524, 13939), (1578, 13462), (3156, 6731)]