64876040

素因数分解:

$2^3\times 5^1\times {\mathrm{197}}^1\times {\mathrm{8233}}^1$

素因数の和:8441

約数の個数: 32

約数和(自身を含む): 146729880

約数和(自身を除く): 81853840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 197, 394, 788, 985, 1576, 1970, 3940, 7880, 8233, 16466, 32932, 41165, 65864, 82330, 164660, 329320, 1621901, 3243802, 6487604, 8109505, 12975208, 16219010, 32438020, 64876040]

約数ペア:

[(1, 64876040), (2, 32438020), (4, 16219010), (5, 12975208), (8, 8109505), (10, 6487604), (20, 3243802), (40, 1621901), (197, 329320), (394, 164660), (788, 82330), (985, 65864), (1576, 41165), (1970, 32932), (3940, 16466), (7880, 8233)]