78282440

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{63131}}^1$

素因数の和:63173

約数の個数: 32

約数和(自身を含む): 181820160

約数和(自身を除く): 103537720

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 63131, 126262, 252524, 315655, 505048, 631310, 1262620, 1957061, 2525240, 3914122, 7828244, 9785305, 15656488, 19570610, 39141220, 78282440]

約数ペア:

[(1, 78282440), (2, 39141220), (4, 19570610), (5, 15656488), (8, 9785305), (10, 7828244), (20, 3914122), (31, 2525240), (40, 1957061), (62, 1262620), (124, 631310), (155, 505048), (248, 315655), (310, 252524), (620, 126262), (1240, 63131)]