201519905

素因数分解:

$5^1\times {\mathrm{23}}^2\times {\mathrm{61}}^1\times {\mathrm{1249}}^1$

素因数の和:1361

約数の個数: 24

約数和(自身を含む): 257145000

約数和(自身を除く): 55625095

約数列:

[1, 5, 23, 61, 115, 305, 529, 1249, 1403, 2645, 6245, 7015, 28727, 32269, 76189, 143635, 161345, 380945, 660721, 1752347, 3303605, 8761735, 40303981, 201519905]

約数ペア:

[(1, 201519905), (5, 40303981), (23, 8761735), (61, 3303605), (115, 1752347), (305, 660721), (529, 380945), (1249, 161345), (1403, 143635), (2645, 76189), (6245, 32269), (7015, 28727)]