21620990

素因数分解:

$2^1\times 5^1\times {\mathrm{1297}}^1\times {\mathrm{1667}}^1$

素因数の和:2971

約数の個数: 16

約数和(自身を含む): 38971152

約数和(自身を除く): 17350162

約数列:

[1, 2, 5, 10, 1297, 1667, 2594, 3334, 6485, 8335, 12970, 16670, 2162099, 4324198, 10810495, 21620990]

約数ペア:

[(1, 21620990), (2, 10810495), (5, 4324198), (10, 2162099), (1297, 16670), (1667, 12970), (2594, 8335), (3334, 6485)]