21841155830

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{421}}^1\times {\mathrm{399071}}^1$

素因数の和:399512

約数の個数: 32

約数和(自身を含む): 42438912768

約数和(自身を除く): 20597756938

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 421, 842, 2105, 4210, 5473, 10946, 27365, 54730, 399071, 798142, 1995355, 3990710, 5187923, 10375846, 25939615, 51879230, 168008891, 336017782, 840044455, 1680088910, 2184115583, 4368231166, 10920577915, 21841155830]

約数ペア:

[(1, 21841155830), (2, 10920577915), (5, 4368231166), (10, 2184115583), (13, 1680088910), (26, 840044455), (65, 336017782), (130, 168008891), (421, 51879230), (842, 25939615), (2105, 10375846), (4210, 5187923), (5473, 3990710), (10946, 1995355), (27365, 798142), (54730, 399071)]