21370990

素因数分解:

$2^1\times 5^1\times {\mathrm{67}}^1\times {\mathrm{167}}^1\times {\mathrm{191}}^1$

素因数の和:432

約数の個数: 32

約数和(自身を含む): 39481344

約数和(自身を除く): 18110354

約数列:

[1, 2, 5, 10, 67, 134, 167, 191, 334, 335, 382, 670, 835, 955, 1670, 1910, 11189, 12797, 22378, 25594, 31897, 55945, 63794, 63985, 111890, 127970, 159485, 318970, 2137099, 4274198, 10685495, 21370990]

約数ペア:

[(1, 21370990), (2, 10685495), (5, 4274198), (10, 2137099), (67, 318970), (134, 159485), (167, 127970), (191, 111890), (334, 63985), (335, 63794), (382, 55945), (670, 31897), (835, 25594), (955, 22378), (1670, 12797), (1910, 11189)]