77777830

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{31489}}^1$

素因数の和:31528

約数の個数: 32

約数和(自身を含む): 158709600

約数和(自身を除く): 80931770

約数列:

[1, 2, 5, 10, 13, 19, 26, 38, 65, 95, 130, 190, 247, 494, 1235, 2470, 31489, 62978, 157445, 314890, 409357, 598291, 818714, 1196582, 2046785, 2991455, 4093570, 5982910, 7777783, 15555566, 38888915, 77777830]

約数ペア:

[(1, 77777830), (2, 38888915), (5, 15555566), (10, 7777783), (13, 5982910), (19, 4093570), (26, 2991455), (38, 2046785), (65, 1196582), (95, 818714), (130, 598291), (190, 409357), (247, 314890), (494, 157445), (1235, 62978), (2470, 31489)]