21010385

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{977}}^1$

素因数の和:1033

約数の個数: 32

約数和(自身を含む): 30419712

約数和(自身を除く): 9409327

約数列:

[1, 5, 11, 17, 23, 55, 85, 115, 187, 253, 391, 935, 977, 1265, 1955, 4301, 4885, 10747, 16609, 21505, 22471, 53735, 83045, 112355, 182699, 247181, 382007, 913495, 1235905, 1910035, 4202077, 21010385]

約数ペア:

[(1, 21010385), (5, 4202077), (11, 1910035), (17, 1235905), (23, 913495), (55, 382007), (85, 247181), (115, 182699), (187, 112355), (253, 83045), (391, 53735), (935, 22471), (977, 21505), (1265, 16609), (1955, 10747), (4301, 4885)]