20861155

素因数分解:

$5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{89}}^1\times {\mathrm{181}}^1$

素因数の和:319

約数の個数: 32

約数和(自身を含む): 29877120

約数和(自身を除く): 9015965

約数列:

[1, 5, 7, 35, 37, 89, 181, 185, 259, 445, 623, 905, 1267, 1295, 3115, 3293, 6335, 6697, 16109, 16465, 23051, 33485, 46879, 80545, 112763, 115255, 234395, 563815, 596033, 2980165, 4172231, 20861155]

約数ペア:

[(1, 20861155), (5, 4172231), (7, 2980165), (35, 596033), (37, 563815), (89, 234395), (181, 115255), (185, 112763), (259, 80545), (445, 46879), (623, 33485), (905, 23051), (1267, 16465), (1295, 16109), (3115, 6697), (3293, 6335)]