20407425

素因数分解:

$3^1\times 5^2\times {\mathrm{19}}^1\times {\mathrm{14321}}^1$

素因数の和:14353

約数の個数: 24

約数和(自身を含む): 35518560

約数和(自身を除く): 15111135

約数列:

[1, 3, 5, 15, 19, 25, 57, 75, 95, 285, 475, 1425, 14321, 42963, 71605, 214815, 272099, 358025, 816297, 1074075, 1360495, 4081485, 6802475, 20407425]

約数ペア:

[(1, 20407425), (3, 6802475), (5, 4081485), (15, 1360495), (19, 1074075), (25, 816297), (57, 358025), (75, 272099), (95, 214815), (285, 71605), (475, 42963), (1425, 14321)]