21315540

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{53}}^1\times {\mathrm{6703}}^1$

素因数の和:6768

約数の個数: 48

約数和(自身を含む): 60818688

約数和(自身を除く): 39503148

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 53, 60, 106, 159, 212, 265, 318, 530, 636, 795, 1060, 1590, 3180, 6703, 13406, 20109, 26812, 33515, 40218, 67030, 80436, 100545, 134060, 201090, 355259, 402180, 710518, 1065777, 1421036, 1776295, 2131554, 3552590, 4263108, 5328885, 7105180, 10657770, 21315540]

約数ペア:

[(1, 21315540), (2, 10657770), (3, 7105180), (4, 5328885), (5, 4263108), (6, 3552590), (10, 2131554), (12, 1776295), (15, 1421036), (20, 1065777), (30, 710518), (53, 402180), (60, 355259), (106, 201090), (159, 134060), (212, 100545), (265, 80436), (318, 67030), (530, 40218), (636, 33515), (795, 26812), (1060, 20109), (1590, 13406), (3180, 6703)]