21121960

素因数分解:

$2^3\times 5^1\times {\mathrm{113}}^1\times {\mathrm{4673}}^1$

素因数の和:4797

約数の個数: 32

約数和(自身を含む): 47955240

約数和(自身を除く): 26833280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 113, 226, 452, 565, 904, 1130, 2260, 4520, 4673, 9346, 18692, 23365, 37384, 46730, 93460, 186920, 528049, 1056098, 2112196, 2640245, 4224392, 5280490, 10560980, 21121960]

約数ペア:

[(1, 21121960), (2, 10560980), (4, 5280490), (5, 4224392), (8, 2640245), (10, 2112196), (20, 1056098), (40, 528049), (113, 186920), (226, 93460), (452, 46730), (565, 37384), (904, 23365), (1130, 18692), (2260, 9346), (4520, 4673)]