251861545

素因数分解:

$5^1\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{197}}^1$

素因数の和:334

約数の個数: 48

約数和(自身を含む): 352194480

約数和(自身を除く): 100332935

約数列:

[1, 5, 13, 17, 65, 85, 89, 169, 197, 221, 445, 845, 985, 1105, 1157, 1513, 2561, 2873, 3349, 5785, 7565, 12805, 14365, 15041, 16745, 17533, 19669, 33293, 43537, 75205, 87665, 98345, 166465, 217685, 227929, 255697, 298061, 565981, 1139645, 1278485, 1490305, 2829905, 2963077, 3874793, 14815385, 19373965, 50372309, 251861545]

約数ペア:

[(1, 251861545), (5, 50372309), (13, 19373965), (17, 14815385), (65, 3874793), (85, 2963077), (89, 2829905), (169, 1490305), (197, 1278485), (221, 1139645), (445, 565981), (845, 298061), (985, 255697), (1105, 227929), (1157, 217685), (1513, 166465), (2561, 98345), (2873, 87665), (3349, 75205), (5785, 43537), (7565, 33293), (12805, 19669), (14365, 17533), (15041, 16745)]