21449416

素因数分解:

$2^3\times {\mathrm{97}}^1\times {\mathrm{131}}^1\times {\mathrm{211}}^1$

素因数の和:445

約数の個数: 32

約数和(自身を含む): 41136480

約数和(自身を除く): 19687064

約数列:

[1, 2, 4, 8, 97, 131, 194, 211, 262, 388, 422, 524, 776, 844, 1048, 1688, 12707, 20467, 25414, 27641, 40934, 50828, 55282, 81868, 101656, 110564, 163736, 221128, 2681177, 5362354, 10724708, 21449416]

約数ペア:

[(1, 21449416), (2, 10724708), (4, 5362354), (8, 2681177), (97, 221128), (131, 163736), (194, 110564), (211, 101656), (262, 81868), (388, 55282), (422, 50828), (524, 40934), (776, 27641), (844, 25414), (1048, 20467), (1688, 12707)]