21970010

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{131}}^1\times {\mathrm{541}}^1$

素因数の和:710

約数の個数: 32

約数和(自身を含む): 41209344

約数和(自身を除く): 19239334

約数列:

[1, 2, 5, 10, 31, 62, 131, 155, 262, 310, 541, 655, 1082, 1310, 2705, 4061, 5410, 8122, 16771, 20305, 33542, 40610, 70871, 83855, 141742, 167710, 354355, 708710, 2197001, 4394002, 10985005, 21970010]

約数ペア:

[(1, 21970010), (2, 10985005), (5, 4394002), (10, 2197001), (31, 708710), (62, 354355), (131, 167710), (155, 141742), (262, 83855), (310, 70871), (541, 40610), (655, 33542), (1082, 20305), (1310, 16771), (2705, 8122), (4061, 5410)]