21695288

素因数分解:

$2^3\times {\mathrm{31}}^1\times {\mathrm{87481}}^1$

素因数の和:87518

約数の個数: 16

約数和(自身を含む): 41991360

約数和(自身を除く): 20296072

約数列:

[1, 2, 4, 8, 31, 62, 124, 248, 87481, 174962, 349924, 699848, 2711911, 5423822, 10847644, 21695288]

約数ペア:

[(1, 21695288), (2, 10847644), (4, 5423822), (8, 2711911), (31, 699848), (62, 349924), (124, 174962), (248, 87481)]