638642005

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{1471}}^1\times {\mathrm{2801}}^1$

素因数の和:4308

約数の個数: 16

約数和(自身を含む): 791912448

約数和(自身を除く): 153270443

約数列:

[1, 5, 31, 155, 1471, 2801, 7355, 14005, 45601, 86831, 228005, 434155, 4120271, 20601355, 127728401, 638642005]

約数ペア:

[(1, 638642005), (5, 127728401), (31, 20601355), (155, 4120271), (1471, 434155), (2801, 228005), (7355, 86831), (14005, 45601)]