20668804

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{103}}^1\times {\mathrm{227}}^1$

素因数の和:364

約数の個数: 48

約数和(自身を含む): 41827968

約数和(自身を除く): 21159164

約数列:

[1, 2, 4, 13, 17, 26, 34, 52, 68, 103, 206, 221, 227, 412, 442, 454, 884, 908, 1339, 1751, 2678, 2951, 3502, 3859, 5356, 5902, 7004, 7718, 11804, 15436, 22763, 23381, 45526, 46762, 50167, 91052, 93524, 100334, 200668, 303953, 397477, 607906, 794954, 1215812, 1589908, 5167201, 10334402, 20668804]

約数ペア:

[(1, 20668804), (2, 10334402), (4, 5167201), (13, 1589908), (17, 1215812), (26, 794954), (34, 607906), (52, 397477), (68, 303953), (103, 200668), (206, 100334), (221, 93524), (227, 91052), (412, 50167), (442, 46762), (454, 45526), (884, 23381), (908, 22763), (1339, 15436), (1751, 11804), (2678, 7718), (2951, 7004), (3502, 5902), (3859, 5356)]