21065912

素因数分解:

$2^3\times 7^1\times {\mathrm{113}}^1\times {\mathrm{3329}}^1$

素因数の和:3455

約数の個数: 32

約数和(自身を含む): 45554400

約数和(自身を除く): 24488488

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 113, 226, 452, 791, 904, 1582, 3164, 3329, 6328, 6658, 13316, 23303, 26632, 46606, 93212, 186424, 376177, 752354, 1504708, 2633239, 3009416, 5266478, 10532956, 21065912]

約数ペア:

[(1, 21065912), (2, 10532956), (4, 5266478), (7, 3009416), (8, 2633239), (14, 1504708), (28, 752354), (56, 376177), (113, 186424), (226, 93212), (452, 46606), (791, 26632), (904, 23303), (1582, 13316), (3164, 6658), (3329, 6328)]