20409225

素因数分解:

$3^1\times 5^2\times {\mathrm{503}}^1\times {\mathrm{541}}^1$

素因数の和:1057

約数の個数: 24

約数和(自身を含む): 33872832

約数和(自身を除く): 13463607

約数列:

[1, 3, 5, 15, 25, 75, 503, 541, 1509, 1623, 2515, 2705, 7545, 8115, 12575, 13525, 37725, 40575, 272123, 816369, 1360615, 4081845, 6803075, 20409225]

約数ペア:

[(1, 20409225), (3, 6803075), (5, 4081845), (15, 1360615), (25, 816369), (75, 272123), (503, 40575), (541, 37725), (1509, 13525), (1623, 12575), (2515, 8115), (2705, 7545)]