13325720

素因数分解:

$2^3\times 5^1\times {\mathrm{79}}^1\times {\mathrm{4217}}^1$

素因数の和:4307

約数の個数: 32

約数和(自身を含む): 30369600

約数和(自身を除く): 17043880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 79, 158, 316, 395, 632, 790, 1580, 3160, 4217, 8434, 16868, 21085, 33736, 42170, 84340, 168680, 333143, 666286, 1332572, 1665715, 2665144, 3331430, 6662860, 13325720]

約数ペア:

[(1, 13325720), (2, 6662860), (4, 3331430), (5, 2665144), (8, 1665715), (10, 1332572), (20, 666286), (40, 333143), (79, 168680), (158, 84340), (316, 42170), (395, 33736), (632, 21085), (790, 16868), (1580, 8434), (3160, 4217)]