638996895

素因数分解:

$3^2\times 5^1\times {\mathrm{2161}}^1\times {\mathrm{6571}}^1$

素因数の和:8743

約数の個数: 24

約数和(自身を含む): 1108275792

約数和(自身を除く): 469278897

約数列:

[1, 3, 5, 9, 15, 45, 2161, 6483, 6571, 10805, 19449, 19713, 32415, 32855, 59139, 97245, 98565, 295695, 14199931, 42599793, 70999655, 127799379, 212998965, 638996895]

約数ペア:

[(1, 638996895), (3, 212998965), (5, 127799379), (9, 70999655), (15, 42599793), (45, 14199931), (2161, 295695), (6483, 98565), (6571, 97245), (10805, 59139), (19449, 32855), (19713, 32415)]