21590570

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{257}}^1\times {\mathrm{271}}^1$

素因数の和:566

約数の個数: 32

約数和(自身を含む): 40421376

約数和(自身を除く): 18830806

約数列:

[1, 2, 5, 10, 31, 62, 155, 257, 271, 310, 514, 542, 1285, 1355, 2570, 2710, 7967, 8401, 15934, 16802, 39835, 42005, 69647, 79670, 84010, 139294, 348235, 696470, 2159057, 4318114, 10795285, 21590570]

約数ペア:

[(1, 21590570), (2, 10795285), (5, 4318114), (10, 2159057), (31, 696470), (62, 348235), (155, 139294), (257, 84010), (271, 79670), (310, 69647), (514, 42005), (542, 39835), (1285, 16802), (1355, 15934), (2570, 8401), (2710, 7967)]