90655640

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{137}}^1\times {\mathrm{233}}^1$

素因数の和:452

約数の個数: 64

約数和(自身を含む): 209252160

約数和(自身を除く): 118596520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 137, 142, 233, 274, 284, 355, 466, 548, 568, 685, 710, 932, 1096, 1165, 1370, 1420, 1864, 2330, 2740, 2840, 4660, 5480, 9320, 9727, 16543, 19454, 31921, 33086, 38908, 48635, 63842, 66172, 77816, 82715, 97270, 127684, 132344, 159605, 165430, 194540, 255368, 319210, 330860, 389080, 638420, 661720, 1276840, 2266391, 4532782, 9065564, 11331955, 18131128, 22663910, 45327820, 90655640]

約数ペア:

[(1, 90655640), (2, 45327820), (4, 22663910), (5, 18131128), (8, 11331955), (10, 9065564), (20, 4532782), (40, 2266391), (71, 1276840), (137, 661720), (142, 638420), (233, 389080), (274, 330860), (284, 319210), (355, 255368), (466, 194540), (548, 165430), (568, 159605), (685, 132344), (710, 127684), (932, 97270), (1096, 82715), (1165, 77816), (1370, 66172), (1420, 63842), (1864, 48635), (2330, 38908), (2740, 33086), (2840, 31921), (4660, 19454), (5480, 16543), (9320, 9727)]