20643165

素因数分解:

$3^2\times 5^1\times {\mathrm{631}}^1\times {\mathrm{727}}^1$

素因数の和:1369

約数の個数: 24

約数和(自身を含む): 35887488

約数和(自身を除く): 15244323

約数列:

[1, 3, 5, 9, 15, 45, 631, 727, 1893, 2181, 3155, 3635, 5679, 6543, 9465, 10905, 28395, 32715, 458737, 1376211, 2293685, 4128633, 6881055, 20643165]

約数ペア:

[(1, 20643165), (3, 6881055), (5, 4128633), (9, 2293685), (15, 1376211), (45, 458737), (631, 32715), (727, 28395), (1893, 10905), (2181, 9465), (3155, 6543), (3635, 5679)]