256101040

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{246251}}^1$

素因数の和:246277

約数の個数: 40

約数和(自身を含む): 641240208

約数和(自身を除く): 385139168

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 246251, 492502, 985004, 1231255, 1970008, 2462510, 3201263, 3940016, 4925020, 6402526, 9850040, 12805052, 16006315, 19700080, 25610104, 32012630, 51220208, 64025260, 128050520, 256101040]

約数ペア:

[(1, 256101040), (2, 128050520), (4, 64025260), (5, 51220208), (8, 32012630), (10, 25610104), (13, 19700080), (16, 16006315), (20, 12805052), (26, 9850040), (40, 6402526), (52, 4925020), (65, 3940016), (80, 3201263), (104, 2462510), (130, 1970008), (208, 1231255), (260, 985004), (520, 492502), (1040, 246251)]