20951195

素因数分解:

$5^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{59}}^1\times {\mathrm{79}}^1$

素因数の和:203

約数の個数: 32

約数和(自身を含む): 27648000

約数和(自身を除く): 6696805

約数列:

[1, 5, 29, 31, 59, 79, 145, 155, 295, 395, 899, 1711, 1829, 2291, 2449, 4495, 4661, 8555, 9145, 11455, 12245, 23305, 53041, 71021, 135169, 144491, 265205, 355105, 675845, 722455, 4190239, 20951195]

約数ペア:

[(1, 20951195), (5, 4190239), (29, 722455), (31, 675845), (59, 355105), (79, 265205), (145, 144491), (155, 135169), (295, 71021), (395, 53041), (899, 23305), (1711, 12245), (1829, 11455), (2291, 9145), (2449, 8555), (4495, 4661)]