12920420

素因数分解:

$2^2\times 5^1\times {\mathrm{113}}^1\times {\mathrm{5717}}^1$

素因数の和:5839

約数の個数: 24

約数和(自身を含む): 27377784

約数和(自身を除く): 14457364

約数列:

[1, 2, 4, 5, 10, 20, 113, 226, 452, 565, 1130, 2260, 5717, 11434, 22868, 28585, 57170, 114340, 646021, 1292042, 2584084, 3230105, 6460210, 12920420]

約数ペア:

[(1, 12920420), (2, 6460210), (4, 3230105), (5, 2584084), (10, 1292042), (20, 646021), (113, 114340), (226, 57170), (452, 28585), (565, 22868), (1130, 11434), (2260, 5717)]