80077960

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{64579}}^1$

素因数の和:64621

約数の個数: 32

約数和(自身を含む): 185990400

約数和(自身を除く): 105912440

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 64579, 129158, 258316, 322895, 516632, 645790, 1291580, 2001949, 2583160, 4003898, 8007796, 10009745, 16015592, 20019490, 40038980, 80077960]

約数ペア:

[(1, 80077960), (2, 40038980), (4, 20019490), (5, 16015592), (8, 10009745), (10, 8007796), (20, 4003898), (31, 2583160), (40, 2001949), (62, 1291580), (124, 645790), (155, 516632), (248, 322895), (310, 258316), (620, 129158), (1240, 64579)]