291259040

素因数分解:

$2^5\times 5^1\times {\mathrm{71}}^1\times {\mathrm{25639}}^1$

素因数の和:25725

約数の個数: 48

約数和(自身を含む): 697818240

約数和(自身を除く): 406559200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 71, 80, 142, 160, 284, 355, 568, 710, 1136, 1420, 2272, 2840, 5680, 11360, 25639, 51278, 102556, 128195, 205112, 256390, 410224, 512780, 820448, 1025560, 1820369, 2051120, 3640738, 4102240, 7281476, 9101845, 14562952, 18203690, 29125904, 36407380, 58251808, 72814760, 145629520, 291259040]

約数ペア:

[(1, 291259040), (2, 145629520), (4, 72814760), (5, 58251808), (8, 36407380), (10, 29125904), (16, 18203690), (20, 14562952), (32, 9101845), (40, 7281476), (71, 4102240), (80, 3640738), (142, 2051120), (160, 1820369), (284, 1025560), (355, 820448), (568, 512780), (710, 410224), (1136, 256390), (1420, 205112), (2272, 128195), (2840, 102556), (5680, 51278), (11360, 25639)]