20217392

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{37}}^2\times {\mathrm{71}}^1$

素因数の和:166

約数の個数: 60

約数和(自身を含む): 43965936

約数和(自身を除く): 23748544

約数列:

[1, 2, 4, 8, 13, 16, 26, 37, 52, 71, 74, 104, 142, 148, 208, 284, 296, 481, 568, 592, 923, 962, 1136, 1369, 1846, 1924, 2627, 2738, 3692, 3848, 5254, 5476, 7384, 7696, 10508, 10952, 14768, 17797, 21016, 21904, 34151, 35594, 42032, 68302, 71188, 97199, 136604, 142376, 194398, 273208, 284752, 388796, 546416, 777592, 1263587, 1555184, 2527174, 5054348, 10108696, 20217392]

約数ペア:

[(1, 20217392), (2, 10108696), (4, 5054348), (8, 2527174), (13, 1555184), (16, 1263587), (26, 777592), (37, 546416), (52, 388796), (71, 284752), (74, 273208), (104, 194398), (142, 142376), (148, 136604), (208, 97199), (284, 71188), (296, 68302), (481, 42032), (568, 35594), (592, 34151), (923, 21904), (962, 21016), (1136, 17797), (1369, 14768), (1846, 10952), (1924, 10508), (2627, 7696), (2738, 7384), (3692, 5476), (3848, 5254)]