20879840

素因数分解:

$2^5\times 5^1\times {\mathrm{37}}^1\times {\mathrm{3527}}^1$

素因数の和:3579

約数の個数: 48

約数和(自身を含む): 50676192

約数和(自身を除く): 29796352

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 37, 40, 74, 80, 148, 160, 185, 296, 370, 592, 740, 1184, 1480, 2960, 3527, 5920, 7054, 14108, 17635, 28216, 35270, 56432, 70540, 112864, 130499, 141080, 260998, 282160, 521996, 564320, 652495, 1043992, 1304990, 2087984, 2609980, 4175968, 5219960, 10439920, 20879840]

約数ペア:

[(1, 20879840), (2, 10439920), (4, 5219960), (5, 4175968), (8, 2609980), (10, 2087984), (16, 1304990), (20, 1043992), (32, 652495), (37, 564320), (40, 521996), (74, 282160), (80, 260998), (148, 141080), (160, 130499), (185, 112864), (296, 70540), (370, 56432), (592, 35270), (740, 28216), (1184, 17635), (1480, 14108), (2960, 7054), (3527, 5920)]