1557100805

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{197}}^1\times {\mathrm{311}}^1$

素因数の和:566

約数の個数: 64

約数和(自身を含む): 2241727488

約数和(自身を除く): 684626683

約数列:

[1, 5, 13, 17, 23, 65, 85, 115, 197, 221, 299, 311, 391, 985, 1105, 1495, 1555, 1955, 2561, 3349, 4043, 4531, 5083, 5287, 7153, 12805, 16745, 20215, 22655, 25415, 26435, 35765, 43537, 58903, 61267, 68731, 77027, 92989, 121601, 217685, 294515, 306335, 343655, 385135, 464945, 608005, 796471, 1001351, 1041539, 1409141, 1580813, 3982355, 5006755, 5207695, 7045705, 7904065, 13540007, 18318833, 23955397, 67700035, 91594165, 119776985, 311420161, 1557100805]

約数ペア:

[(1, 1557100805), (5, 311420161), (13, 119776985), (17, 91594165), (23, 67700035), (65, 23955397), (85, 18318833), (115, 13540007), (197, 7904065), (221, 7045705), (299, 5207695), (311, 5006755), (391, 3982355), (985, 1580813), (1105, 1409141), (1495, 1041539), (1555, 1001351), (1955, 796471), (2561, 608005), (3349, 464945), (4043, 385135), (4531, 343655), (5083, 306335), (5287, 294515), (7153, 217685), (12805, 121601), (16745, 92989), (20215, 77027), (22655, 68731), (25415, 61267), (26435, 58903), (35765, 43537)]