81370445

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{1607}}^1$

素因数の和:1685

約数の個数: 32

約数和(自身を含む): 113460480

約数和(自身を除く): 32090035

約数列:

[1, 5, 13, 19, 41, 65, 95, 205, 247, 533, 779, 1235, 1607, 2665, 3895, 8035, 10127, 20891, 30533, 50635, 65887, 104455, 152665, 329435, 396929, 856531, 1251853, 1984645, 4282655, 6259265, 16274089, 81370445]

約数ペア:

[(1, 81370445), (5, 16274089), (13, 6259265), (19, 4282655), (41, 1984645), (65, 1251853), (95, 856531), (205, 396929), (247, 329435), (533, 152665), (779, 104455), (1235, 65887), (1607, 50635), (2665, 30533), (3895, 20891), (8035, 10127)]