28490025

素因数分解:

$3^1\times 5^2\times {\mathrm{19}}^1\times {\mathrm{19993}}^1$

素因数の和:20025

約数の個数: 24

約数和(自身を含む): 49585120

約数和(自身を除く): 21095095

約数列:

[1, 3, 5, 15, 19, 25, 57, 75, 95, 285, 475, 1425, 19993, 59979, 99965, 299895, 379867, 499825, 1139601, 1499475, 1899335, 5698005, 9496675, 28490025]

約数ペア:

[(1, 28490025), (3, 9496675), (5, 5698005), (15, 1899335), (19, 1499475), (25, 1139601), (57, 499825), (75, 379867), (95, 299895), (285, 99965), (475, 59979), (1425, 19993)]