21032865

素因数分解:

$3^5\times 5^1\times 7^1\times {\mathrm{2473}}^1$

素因数の和:2500

約数の個数: 48

約数和(自身を含む): 43225728

約数和(自身を除く): 22192863

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 63, 81, 105, 135, 189, 243, 315, 405, 567, 945, 1215, 1701, 2473, 2835, 7419, 8505, 12365, 17311, 22257, 37095, 51933, 66771, 86555, 111285, 155799, 200313, 259665, 333855, 467397, 600939, 778995, 1001565, 1402191, 2336985, 3004695, 4206573, 7010955, 21032865]

約数ペア:

[(1, 21032865), (3, 7010955), (5, 4206573), (7, 3004695), (9, 2336985), (15, 1402191), (21, 1001565), (27, 778995), (35, 600939), (45, 467397), (63, 333855), (81, 259665), (105, 200313), (135, 155799), (189, 111285), (243, 86555), (315, 66771), (405, 51933), (567, 37095), (945, 22257), (1215, 17311), (1701, 12365), (2473, 8505), (2835, 7419)]