21000201677

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{173}}^1\times {\mathrm{78467}}^1$

素因数の和:78677

約数の個数: 32

約数和(自身を含む): 27525318912

約数和(自身を除く): 6525117235

約数列:

[1, 7, 13, 17, 91, 119, 173, 221, 1211, 1547, 2249, 2941, 15743, 20587, 38233, 78467, 267631, 549269, 1020071, 1333939, 7140497, 9337573, 13574791, 17341207, 95023537, 121388449, 176472283, 230771447, 1235305981, 1615400129, 3000028811, 21000201677]

約数ペア:

[(1, 21000201677), (7, 3000028811), (13, 1615400129), (17, 1235305981), (91, 230771447), (119, 176472283), (173, 121388449), (221, 95023537), (1211, 17341207), (1547, 13574791), (2249, 9337573), (2941, 7140497), (15743, 1333939), (20587, 1020071), (38233, 549269), (78467, 267631)]