21922420

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{84317}}^1$

素因数の和:84339

約数の個数: 24

約数和(自身を含む): 49578984

約数和(自身を除く): 27656564

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 84317, 168634, 337268, 421585, 843170, 1096121, 1686340, 2192242, 4384484, 5480605, 10961210, 21922420]

約数ペア:

[(1, 21922420), (2, 10961210), (4, 5480605), (5, 4384484), (10, 2192242), (13, 1686340), (20, 1096121), (26, 843170), (52, 421585), (65, 337268), (130, 168634), (260, 84317)]