80110820

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{157}}^1\times {\mathrm{823}}^1$

素因数の和:1020

約数の個数: 48

約数和(自身を含む): 174978048

約数和(自身を除く): 94867228

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 157, 310, 314, 620, 628, 785, 823, 1570, 1646, 3140, 3292, 4115, 4867, 8230, 9734, 16460, 19468, 24335, 25513, 48670, 51026, 97340, 102052, 127565, 129211, 255130, 258422, 510260, 516844, 646055, 1292110, 2584220, 4005541, 8011082, 16022164, 20027705, 40055410, 80110820]

約数ペア:

[(1, 80110820), (2, 40055410), (4, 20027705), (5, 16022164), (10, 8011082), (20, 4005541), (31, 2584220), (62, 1292110), (124, 646055), (155, 516844), (157, 510260), (310, 258422), (314, 255130), (620, 129211), (628, 127565), (785, 102052), (823, 97340), (1570, 51026), (1646, 48670), (3140, 25513), (3292, 24335), (4115, 19468), (4867, 16460), (8230, 9734)]