21790184

素因数分解:

$2^3\times {\mathrm{13}}^2\times {\mathrm{71}}^1\times {\mathrm{227}}^1$

素因数の和:330

約数の個数: 48

約数和(自身を含む): 45061920

約数和(自身を除く): 23271736

約数列:

[1, 2, 4, 8, 13, 26, 52, 71, 104, 142, 169, 227, 284, 338, 454, 568, 676, 908, 923, 1352, 1816, 1846, 2951, 3692, 5902, 7384, 11804, 11999, 16117, 23608, 23998, 32234, 38363, 47996, 64468, 76726, 95992, 128936, 153452, 209521, 306904, 419042, 838084, 1676168, 2723773, 5447546, 10895092, 21790184]

約数ペア:

[(1, 21790184), (2, 10895092), (4, 5447546), (8, 2723773), (13, 1676168), (26, 838084), (52, 419042), (71, 306904), (104, 209521), (142, 153452), (169, 128936), (227, 95992), (284, 76726), (338, 64468), (454, 47996), (568, 38363), (676, 32234), (908, 23998), (923, 23608), (1352, 16117), (1816, 11999), (1846, 11804), (2951, 7384), (3692, 5902)]