21515612

素因数分解:

$2^2\times {\mathrm{31}}^1\times {\mathrm{167}}^1\times {\mathrm{1039}}^1$

素因数の和:1241

約数の個数: 24

約数和(自身を含む): 39137280

約数和(自身を除く): 17621668

約数列:

[1, 2, 4, 31, 62, 124, 167, 334, 668, 1039, 2078, 4156, 5177, 10354, 20708, 32209, 64418, 128836, 173513, 347026, 694052, 5378903, 10757806, 21515612]

約数ペア:

[(1, 21515612), (2, 10757806), (4, 5378903), (31, 694052), (62, 347026), (124, 173513), (167, 128836), (334, 64418), (668, 32209), (1039, 20708), (2078, 10354), (4156, 5177)]