15621680

素因数分解:

$2^4\times 5^1\times {\mathrm{195271}}^1$

素因数の和:195284

約数の個数: 20

約数和(自身を含む): 36320592

約数和(自身を除く): 20698912

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 195271, 390542, 781084, 976355, 1562168, 1952710, 3124336, 3905420, 7810840, 15621680]

約数ペア:

[(1, 15621680), (2, 7810840), (4, 3905420), (5, 3124336), (8, 1952710), (10, 1562168), (16, 976355), (20, 781084), (40, 390542), (80, 195271)]