20587255

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{601}}^1$

素因数の和:667

約数の個数: 32

約数和(自身を含む): 29127168

約数和(自身を除く): 8539913

約数列:

[1, 5, 13, 17, 31, 65, 85, 155, 221, 403, 527, 601, 1105, 2015, 2635, 3005, 6851, 7813, 10217, 18631, 34255, 39065, 51085, 93155, 132821, 242203, 316727, 664105, 1211015, 1583635, 4117451, 20587255]

約数ペア:

[(1, 20587255), (5, 4117451), (13, 1583635), (17, 1211015), (31, 664105), (65, 316727), (85, 242203), (155, 132821), (221, 93155), (403, 51085), (527, 39065), (601, 34255), (1105, 18631), (2015, 10217), (2635, 7813), (3005, 6851)]