645311877

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{457}}^1\times {\mathrm{3539}}^1$

素因数の和:4025

約数の個数: 32

約数和(自身を含む): 1037644800

約数和(自身を除く): 392332923

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 457, 1371, 3199, 3539, 8683, 9597, 10617, 24773, 26049, 60781, 67241, 74319, 182343, 201723, 470687, 1412061, 1617323, 4851969, 11321261, 30729137, 33963783, 92187411, 215103959, 645311877]

約数ペア:

[(1, 645311877), (3, 215103959), (7, 92187411), (19, 33963783), (21, 30729137), (57, 11321261), (133, 4851969), (399, 1617323), (457, 1412061), (1371, 470687), (3199, 201723), (3539, 182343), (8683, 74319), (9597, 67241), (10617, 60781), (24773, 26049)]