278164240

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{112163}}^1$

素因数の和:112207

約数の個数: 40

約数和(自身を含む): 667600128

約数和(自身を除く): 389435888

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 112163, 224326, 448652, 560815, 897304, 1121630, 1794608, 2243260, 3477053, 4486520, 6954106, 8973040, 13908212, 17385265, 27816424, 34770530, 55632848, 69541060, 139082120, 278164240]

約数ペア:

[(1, 278164240), (2, 139082120), (4, 69541060), (5, 55632848), (8, 34770530), (10, 27816424), (16, 17385265), (20, 13908212), (31, 8973040), (40, 6954106), (62, 4486520), (80, 3477053), (124, 2243260), (155, 1794608), (248, 1121630), (310, 897304), (496, 560815), (620, 448652), (1240, 224326), (2480, 112163)]