21151364

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{67}}^1\times {\mathrm{467}}^1$

素因数の和:564

約数の個数: 36

約数和(自身を含む): 40766544

約数和(自身を除く): 19615180

約数列:

[1, 2, 4, 13, 26, 52, 67, 134, 169, 268, 338, 467, 676, 871, 934, 1742, 1868, 3484, 6071, 11323, 12142, 22646, 24284, 31289, 45292, 62578, 78923, 125156, 157846, 315692, 406757, 813514, 1627028, 5287841, 10575682, 21151364]

約数ペア:

[(1, 21151364), (2, 10575682), (4, 5287841), (13, 1627028), (26, 813514), (52, 406757), (67, 315692), (134, 157846), (169, 125156), (268, 78923), (338, 62578), (467, 45292), (676, 31289), (871, 24284), (934, 22646), (1742, 12142), (1868, 11323), (3484, 6071)]