21734245

素因数分解:

$5^1\times {\mathrm{13}}^2\times {\mathrm{17}}^2\times {\mathrm{89}}^1$

素因数の和:154

約数の個数: 36

約数和(自身を含む): 30337740

約数和(自身を除く): 8603495

約数列:

[1, 5, 13, 17, 65, 85, 89, 169, 221, 289, 445, 845, 1105, 1157, 1445, 1513, 2873, 3757, 5785, 7565, 14365, 15041, 18785, 19669, 25721, 48841, 75205, 98345, 128605, 244205, 255697, 334373, 1278485, 1671865, 4346849, 21734245]

約数ペア:

[(1, 21734245), (5, 4346849), (13, 1671865), (17, 1278485), (65, 334373), (85, 255697), (89, 244205), (169, 128605), (221, 98345), (289, 75205), (445, 48841), (845, 25721), (1105, 19669), (1157, 18785), (1445, 15041), (1513, 14365), (2873, 7565), (3757, 5785)]