20318360

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{11813}}^1$

素因数の和:11867

約数の個数: 32

約数和(自身を含む): 46783440

約数和(自身を除く): 26465080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 11813, 23626, 47252, 59065, 94504, 118130, 236260, 472520, 507959, 1015918, 2031836, 2539795, 4063672, 5079590, 10159180, 20318360]

約数ペア:

[(1, 20318360), (2, 10159180), (4, 5079590), (5, 4063672), (8, 2539795), (10, 2031836), (20, 1015918), (40, 507959), (43, 472520), (86, 236260), (172, 118130), (215, 94504), (344, 59065), (430, 47252), (860, 23626), (1720, 11813)]