257240

素因数分解:

$2^3\times 5^1\times {\mathrm{59}}^1\times {\mathrm{109}}^1$

素因数の和:179

約数の個数: 32

約数和(自身を含む): 594000

約数和(自身を除く): 336760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 59, 109, 118, 218, 236, 295, 436, 472, 545, 590, 872, 1090, 1180, 2180, 2360, 4360, 6431, 12862, 25724, 32155, 51448, 64310, 128620, 257240]

約数ペア:

[(1, 257240), (2, 128620), (4, 64310), (5, 51448), (8, 32155), (10, 25724), (20, 12862), (40, 6431), (59, 4360), (109, 2360), (118, 2180), (218, 1180), (236, 1090), (295, 872), (436, 590), (472, 545)]