20911688

素因数分解:

$2^3\times 7^1\times {\mathrm{151}}^1\times {\mathrm{2473}}^1$

素因数の和:2637

約数の個数: 32

約数和(自身を含む): 45125760

約数和(自身を除く): 24214072

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 151, 302, 604, 1057, 1208, 2114, 2473, 4228, 4946, 8456, 9892, 17311, 19784, 34622, 69244, 138488, 373423, 746846, 1493692, 2613961, 2987384, 5227922, 10455844, 20911688]

約数ペア:

[(1, 20911688), (2, 10455844), (4, 5227922), (7, 2987384), (8, 2613961), (14, 1493692), (28, 746846), (56, 373423), (151, 138488), (302, 69244), (604, 34622), (1057, 19784), (1208, 17311), (2114, 9892), (2473, 8456), (4228, 4946)]