20820625

素因数分解:

$5^4\times 7^1\times {\mathrm{4759}}^1$

素因数の和:4786

約数の個数: 20

約数和(自身を含む): 29740480

約数和(自身を除く): 8919855

約数列:

[1, 5, 7, 25, 35, 125, 175, 625, 875, 4375, 4759, 23795, 33313, 118975, 166565, 594875, 832825, 2974375, 4164125, 20820625]

約数ペア:

[(1, 20820625), (5, 4164125), (7, 2974375), (25, 832825), (35, 594875), (125, 166565), (175, 118975), (625, 33313), (875, 23795), (4375, 4759)]