19626920

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{11411}}^1$

素因数の和:11465

約数の個数: 32

約数和(自身を含む): 45191520

約数和(自身を除く): 25564600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 11411, 22822, 45644, 57055, 91288, 114110, 228220, 456440, 490673, 981346, 1962692, 2453365, 3925384, 4906730, 9813460, 19626920]

約数ペア:

[(1, 19626920), (2, 9813460), (4, 4906730), (5, 3925384), (8, 2453365), (10, 1962692), (20, 981346), (40, 490673), (43, 456440), (86, 228220), (172, 114110), (215, 91288), (344, 57055), (430, 45644), (860, 22822), (1720, 11411)]