21557964

素因数分解:

$2^2\times 3^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{1019}}^1$

素因数の和:1110

約数の個数: 48

約数和(自身を含む): 52778880

約数和(自身を除く): 31220916

約数列:

[1, 2, 3, 4, 6, 12, 41, 43, 82, 86, 123, 129, 164, 172, 246, 258, 492, 516, 1019, 1763, 2038, 3057, 3526, 4076, 5289, 6114, 7052, 10578, 12228, 21156, 41779, 43817, 83558, 87634, 125337, 131451, 167116, 175268, 250674, 262902, 501348, 525804, 1796497, 3592994, 5389491, 7185988, 10778982, 21557964]

約数ペア:

[(1, 21557964), (2, 10778982), (3, 7185988), (4, 5389491), (6, 3592994), (12, 1796497), (41, 525804), (43, 501348), (82, 262902), (86, 250674), (123, 175268), (129, 167116), (164, 131451), (172, 125337), (246, 87634), (258, 83558), (492, 43817), (516, 41779), (1019, 21156), (1763, 12228), (2038, 10578), (3057, 7052), (3526, 6114), (4076, 5289)]