20542288

素因数分解:

$2^4\times {\mathrm{13}}^2\times {\mathrm{71}}^1\times {\mathrm{107}}^1$

素因数の和:212

約数の個数: 60

約数和(自身を含む): 44113248

約数和(自身を除く): 23570960

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 71, 104, 107, 142, 169, 208, 214, 284, 338, 428, 568, 676, 856, 923, 1136, 1352, 1391, 1712, 1846, 2704, 2782, 3692, 5564, 7384, 7597, 11128, 11999, 14768, 15194, 18083, 22256, 23998, 30388, 36166, 47996, 60776, 72332, 95992, 98761, 121552, 144664, 191984, 197522, 289328, 395044, 790088, 1283893, 1580176, 2567786, 5135572, 10271144, 20542288]

約数ペア:

[(1, 20542288), (2, 10271144), (4, 5135572), (8, 2567786), (13, 1580176), (16, 1283893), (26, 790088), (52, 395044), (71, 289328), (104, 197522), (107, 191984), (142, 144664), (169, 121552), (208, 98761), (214, 95992), (284, 72332), (338, 60776), (428, 47996), (568, 36166), (676, 30388), (856, 23998), (923, 22256), (1136, 18083), (1352, 15194), (1391, 14768), (1712, 11999), (1846, 11128), (2704, 7597), (2782, 7384), (3692, 5564)]