20129715

素因数分解:

$3^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{2161}}^1$

素因数の和:2201

約数の個数: 40

約数和(自身を含む): 37670688

約数和(自身を除く): 17540973

約数列:

[1, 3, 5, 9, 15, 23, 27, 45, 69, 81, 115, 135, 207, 345, 405, 621, 1035, 1863, 2161, 3105, 6483, 9315, 10805, 19449, 32415, 49703, 58347, 97245, 149109, 175041, 248515, 291735, 447327, 745545, 875205, 1341981, 2236635, 4025943, 6709905, 20129715]

約数ペア:

[(1, 20129715), (3, 6709905), (5, 4025943), (9, 2236635), (15, 1341981), (23, 875205), (27, 745545), (45, 447327), (69, 291735), (81, 248515), (115, 175041), (135, 149109), (207, 97245), (345, 58347), (405, 49703), (621, 32415), (1035, 19449), (1863, 10805), (2161, 9315), (3105, 6483)]