16620305

素因数分解:

$5^1\times {\mathrm{13}}^3\times {\mathrm{17}}^1\times {\mathrm{89}}^1$

素因数の和:150

約数の個数: 32

約数和(自身を含む): 23133600

約数和(自身を除く): 6513295

約数列:

[1, 5, 13, 17, 65, 85, 89, 169, 221, 445, 845, 1105, 1157, 1513, 2197, 2873, 5785, 7565, 10985, 14365, 15041, 19669, 37349, 75205, 98345, 186745, 195533, 255697, 977665, 1278485, 3324061, 16620305]

約数ペア:

[(1, 16620305), (5, 3324061), (13, 1278485), (17, 977665), (65, 255697), (85, 195533), (89, 186745), (169, 98345), (221, 75205), (445, 37349), (845, 19669), (1105, 15041), (1157, 14365), (1513, 10985), (2197, 7565), (2873, 5785)]