64768040

素因数分解:

$2^3\times 5^1\times {\mathrm{251}}^1\times {\mathrm{6451}}^1$

素因数の和:6713

約数の個数: 32

約数和(自身を含む): 146331360

約数和(自身を除く): 81563320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 251, 502, 1004, 1255, 2008, 2510, 5020, 6451, 10040, 12902, 25804, 32255, 51608, 64510, 129020, 258040, 1619201, 3238402, 6476804, 8096005, 12953608, 16192010, 32384020, 64768040]

約数ペア:

[(1, 64768040), (2, 32384020), (4, 16192010), (5, 12953608), (8, 8096005), (10, 6476804), (20, 3238402), (40, 1619201), (251, 258040), (502, 129020), (1004, 64510), (1255, 51608), (2008, 32255), (2510, 25804), (5020, 12902), (6451, 10040)]