20123658890

素因数分解:

$2^1\times 5^1\times {\mathrm{163}}^1\times {\mathrm{12345803}}^1$

素因数の和:12345973

約数の個数: 16

約数和(自身を含む): 36444813408

約数和(自身を除く): 16321154518

約数列:

[1, 2, 5, 10, 163, 326, 815, 1630, 12345803, 24691606, 61729015, 123458030, 2012365889, 4024731778, 10061829445, 20123658890]

約数ペア:

[(1, 20123658890), (2, 10061829445), (5, 4024731778), (10, 2012365889), (163, 123458030), (326, 61729015), (815, 24691606), (1630, 12345803)]