20421105

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{907}}^1$

素因数の和:1013

約数の個数: 32

約数和(自身を含む): 34867200

約数和(自身を除く): 14446095

約数列:

[1, 3, 5, 15, 19, 57, 79, 95, 237, 285, 395, 907, 1185, 1501, 2721, 4503, 4535, 7505, 13605, 17233, 22515, 51699, 71653, 86165, 214959, 258495, 358265, 1074795, 1361407, 4084221, 6807035, 20421105]

約数ペア:

[(1, 20421105), (3, 6807035), (5, 4084221), (15, 1361407), (19, 1074795), (57, 358265), (79, 258495), (95, 214959), (237, 86165), (285, 71653), (395, 51699), (907, 22515), (1185, 17233), (1501, 13605), (2721, 7505), (4503, 4535)]