19891490

素因数分解:

$2^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{32609}}^1$

素因数の和:32677

約数の個数: 16

約数和(自身を含む): 36392760

約数和(自身を除く): 16501270

約数列:

[1, 2, 5, 10, 61, 122, 305, 610, 32609, 65218, 163045, 326090, 1989149, 3978298, 9945745, 19891490]

約数ペア:

[(1, 19891490), (2, 9945745), (5, 3978298), (10, 1989149), (61, 326090), (122, 163045), (305, 65218), (610, 32609)]