20037680

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19267}}^1$

素因数の和:19293

約数の個数: 40

約数和(自身を含む): 50173872

約数和(自身を除く): 30136192

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 19267, 38534, 77068, 96335, 154136, 192670, 250471, 308272, 385340, 500942, 770680, 1001884, 1252355, 1541360, 2003768, 2504710, 4007536, 5009420, 10018840, 20037680]

約数ペア:

[(1, 20037680), (2, 10018840), (4, 5009420), (5, 4007536), (8, 2504710), (10, 2003768), (13, 1541360), (16, 1252355), (20, 1001884), (26, 770680), (40, 500942), (52, 385340), (65, 308272), (80, 250471), (104, 192670), (130, 154136), (208, 96335), (260, 77068), (520, 38534), (1040, 19267)]