21410180

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{307}}^1\times {\mathrm{317}}^1$

素因数の和:644

約数の個数: 48

約数和(自身を含む): 49363776

約数和(自身を除く): 27953596

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 307, 317, 614, 634, 1228, 1268, 1535, 1585, 3070, 3170, 3377, 3487, 6140, 6340, 6754, 6974, 13508, 13948, 16885, 17435, 33770, 34870, 67540, 69740, 97319, 194638, 389276, 486595, 973190, 1070509, 1946380, 2141018, 4282036, 5352545, 10705090, 21410180]

約数ペア:

[(1, 21410180), (2, 10705090), (4, 5352545), (5, 4282036), (10, 2141018), (11, 1946380), (20, 1070509), (22, 973190), (44, 486595), (55, 389276), (110, 194638), (220, 97319), (307, 69740), (317, 67540), (614, 34870), (634, 33770), (1228, 17435), (1268, 16885), (1535, 13948), (1585, 13508), (3070, 6974), (3170, 6754), (3377, 6340), (3487, 6140)]