80564020

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{211}}^1\times {\mathrm{1123}}^1$

素因数の和:1360

約数の個数: 48

約数和(自身を含む): 180145728

約数和(自身を除く): 99581708

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 211, 340, 422, 844, 1055, 1123, 2110, 2246, 3587, 4220, 4492, 5615, 7174, 11230, 14348, 17935, 19091, 22460, 35870, 38182, 71740, 76364, 95455, 190910, 236953, 381820, 473906, 947812, 1184765, 2369530, 4028201, 4739060, 8056402, 16112804, 20141005, 40282010, 80564020]

約数ペア:

[(1, 80564020), (2, 40282010), (4, 20141005), (5, 16112804), (10, 8056402), (17, 4739060), (20, 4028201), (34, 2369530), (68, 1184765), (85, 947812), (170, 473906), (211, 381820), (340, 236953), (422, 190910), (844, 95455), (1055, 76364), (1123, 71740), (2110, 38182), (2246, 35870), (3587, 22460), (4220, 19091), (4492, 17935), (5615, 14348), (7174, 11230)]