1280996840

素因数分解:

$2^3\times 5^1\times {\mathrm{1049}}^1\times {\mathrm{30529}}^1$

素因数の和:31589

約数の個数: 32

約数和(自身を含む): 2885085000

約数和(自身を除く): 1604088160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1049, 2098, 4196, 5245, 8392, 10490, 20980, 30529, 41960, 61058, 122116, 152645, 244232, 305290, 610580, 1221160, 32024921, 64049842, 128099684, 160124605, 256199368, 320249210, 640498420, 1280996840]

約数ペア:

[(1, 1280996840), (2, 640498420), (4, 320249210), (5, 256199368), (8, 160124605), (10, 128099684), (20, 64049842), (40, 32024921), (1049, 1221160), (2098, 610580), (4196, 305290), (5245, 244232), (8392, 152645), (10490, 122116), (20980, 61058), (30529, 41960)]