20812870

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{4327}}^1$

素因数の和:4384

約数の個数: 32

約数和(自身を含む): 41444928

約数和(自身を除く): 20632058

約数列:

[1, 2, 5, 10, 13, 26, 37, 65, 74, 130, 185, 370, 481, 962, 2405, 4327, 4810, 8654, 21635, 43270, 56251, 112502, 160099, 281255, 320198, 562510, 800495, 1600990, 2081287, 4162574, 10406435, 20812870]

約数ペア:

[(1, 20812870), (2, 10406435), (5, 4162574), (10, 2081287), (13, 1600990), (26, 800495), (37, 562510), (65, 320198), (74, 281255), (130, 160099), (185, 112502), (370, 56251), (481, 43270), (962, 21635), (2405, 8654), (4327, 4810)]