20211275

素因数分解:

$5^2\times 7^3\times {\mathrm{2357}}^1$

素因数の和:2388

約数の個数: 24

約数和(自身を含む): 29239200

約数和(自身を除く): 9027925

約数列:

[1, 5, 7, 25, 35, 49, 175, 245, 343, 1225, 1715, 2357, 8575, 11785, 16499, 58925, 82495, 115493, 412475, 577465, 808451, 2887325, 4042255, 20211275]

約数ペア:

[(1, 20211275), (5, 4042255), (7, 2887325), (25, 808451), (35, 577465), (49, 412475), (175, 115493), (245, 82495), (343, 58925), (1225, 16499), (1715, 11785), (2357, 8575)]