290437240

素因数分解:

$2^3\times 5^1\times {\mathrm{283}}^1\times {\mathrm{25657}}^1$

素因数の和:25951

約数の個数: 32

約数和(自身を含む): 655818480

約数和(自身を除く): 365381240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 283, 566, 1132, 1415, 2264, 2830, 5660, 11320, 25657, 51314, 102628, 128285, 205256, 256570, 513140, 1026280, 7260931, 14521862, 29043724, 36304655, 58087448, 72609310, 145218620, 290437240]

約数ペア:

[(1, 290437240), (2, 145218620), (4, 72609310), (5, 58087448), (8, 36304655), (10, 29043724), (20, 14521862), (40, 7260931), (283, 1026280), (566, 513140), (1132, 256570), (1415, 205256), (2264, 128285), (2830, 102628), (5660, 51314), (11320, 25657)]