1821984905

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{19979}}^1$

素因数の和:20081

約数の個数: 32

約数和(自身を含む): 2497340160

約数和(自身を除く): 675355255

約数列:

[1, 5, 13, 23, 61, 65, 115, 299, 305, 793, 1403, 1495, 3965, 7015, 18239, 19979, 91195, 99895, 259727, 459517, 1218719, 1298635, 2297585, 5973721, 6093595, 15843347, 28030537, 29868605, 79216735, 140152685, 364396981, 1821984905]

約数ペア:

[(1, 1821984905), (5, 364396981), (13, 140152685), (23, 79216735), (61, 29868605), (65, 28030537), (115, 15843347), (299, 6093595), (305, 5973721), (793, 2297585), (1403, 1298635), (1495, 1218719), (3965, 459517), (7015, 259727), (18239, 99895), (19979, 91195)]