80485720

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{287449}}^1$

素因数の和:287467

約数の個数: 32

約数和(自身を含む): 206964000

約数和(自身を除く): 126478280

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 287449, 574898, 1149796, 1437245, 2012143, 2299592, 2874490, 4024286, 5748980, 8048572, 10060715, 11497960, 16097144, 20121430, 40242860, 80485720]

約数ペア:

[(1, 80485720), (2, 40242860), (4, 20121430), (5, 16097144), (7, 11497960), (8, 10060715), (10, 8048572), (14, 5748980), (20, 4024286), (28, 2874490), (35, 2299592), (40, 2012143), (56, 1437245), (70, 1149796), (140, 574898), (280, 287449)]