21031810072

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{251}}^1\times {\mathrm{115099}}^1$

素因数の和:115376

約数の個数: 64

約数和(自身を含む): 48728736000

約数和(自身を除く): 27696925928

約数列:

[1, 2, 4, 7, 8, 13, 14, 26, 28, 52, 56, 91, 104, 182, 251, 364, 502, 728, 1004, 1757, 2008, 3263, 3514, 6526, 7028, 13052, 14056, 22841, 26104, 45682, 91364, 115099, 182728, 230198, 460396, 805693, 920792, 1496287, 1611386, 2992574, 3222772, 5985148, 6445544, 10474009, 11970296, 20948018, 28889849, 41896036, 57779698, 83792072, 115559396, 202228943, 231118792, 375568037, 404457886, 751136074, 808915772, 1502272148, 1617831544, 2628976259, 3004544296, 5257952518, 10515905036, 21031810072]

約数ペア:

[(1, 21031810072), (2, 10515905036), (4, 5257952518), (7, 3004544296), (8, 2628976259), (13, 1617831544), (14, 1502272148), (26, 808915772), (28, 751136074), (52, 404457886), (56, 375568037), (91, 231118792), (104, 202228943), (182, 115559396), (251, 83792072), (364, 57779698), (502, 41896036), (728, 28889849), (1004, 20948018), (1757, 11970296), (2008, 10474009), (3263, 6445544), (3514, 5985148), (6526, 3222772), (7028, 2992574), (13052, 1611386), (14056, 1496287), (22841, 920792), (26104, 805693), (45682, 460396), (91364, 230198), (115099, 182728)]