21202388

素因数分解:

$2^2\times {\mathrm{31}}^1\times {\mathrm{163}}^1\times {\mathrm{1049}}^1$

素因数の和:1247

約数の個数: 24

約数和(自身を含む): 38572800

約数和(自身を除く): 17370412

約数列:

[1, 2, 4, 31, 62, 124, 163, 326, 652, 1049, 2098, 4196, 5053, 10106, 20212, 32519, 65038, 130076, 170987, 341974, 683948, 5300597, 10601194, 21202388]

約数ペア:

[(1, 21202388), (2, 10601194), (4, 5300597), (31, 683948), (62, 341974), (124, 170987), (163, 130076), (326, 65038), (652, 32519), (1049, 20212), (2098, 10106), (4196, 5053)]