27720483980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{421}}^1\times {\mathrm{470317}}^1$

素因数の和:470754

約数の個数: 48

約数和(自身を含む): 66687329856

約数和(自身を除く): 38966845876

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 421, 842, 1684, 2105, 2947, 4210, 5894, 8420, 11788, 14735, 29470, 58940, 470317, 940634, 1881268, 2351585, 3292219, 4703170, 6584438, 9406340, 13168876, 16461095, 32922190, 65844380, 198003457, 396006914, 792013828, 990017285, 1386024199, 1980034570, 2772048398, 3960069140, 5544096796, 6930120995, 13860241990, 27720483980]

約数ペア:

[(1, 27720483980), (2, 13860241990), (4, 6930120995), (5, 5544096796), (7, 3960069140), (10, 2772048398), (14, 1980034570), (20, 1386024199), (28, 990017285), (35, 792013828), (70, 396006914), (140, 198003457), (421, 65844380), (842, 32922190), (1684, 16461095), (2105, 13168876), (2947, 9406340), (4210, 6584438), (5894, 4703170), (8420, 3292219), (11788, 2351585), (14735, 1881268), (29470, 940634), (58940, 470317)]