19572640

素因数分解:

$2^5\times 5^1\times {\mathrm{149}}^1\times {\mathrm{821}}^1$

素因数の和:985

約数の個数: 48

約数和(自身を含む): 46607400

約数和(自身を除く): 27034760

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 149, 160, 298, 596, 745, 821, 1192, 1490, 1642, 2384, 2980, 3284, 4105, 4768, 5960, 6568, 8210, 11920, 13136, 16420, 23840, 26272, 32840, 65680, 122329, 131360, 244658, 489316, 611645, 978632, 1223290, 1957264, 2446580, 3914528, 4893160, 9786320, 19572640]

約数ペア:

[(1, 19572640), (2, 9786320), (4, 4893160), (5, 3914528), (8, 2446580), (10, 1957264), (16, 1223290), (20, 978632), (32, 611645), (40, 489316), (80, 244658), (149, 131360), (160, 122329), (298, 65680), (596, 32840), (745, 26272), (821, 23840), (1192, 16420), (1490, 13136), (1642, 11920), (2384, 8210), (2980, 6568), (3284, 5960), (4105, 4768)]