644663135

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{1039}}^1\times {\mathrm{4003}}^1$

素因数の和:5078

約数の個数: 16

約数和(自身を含む): 799518720

約数和(自身を除く): 154855585

約数列:

[1, 5, 31, 155, 1039, 4003, 5195, 20015, 32209, 124093, 161045, 620465, 4159117, 20795585, 128932627, 644663135]

約数ペア:

[(1, 644663135), (5, 128932627), (31, 20795585), (155, 4159117), (1039, 620465), (4003, 161045), (5195, 124093), (20015, 32209)]