20968575

素因数分解:

$3^1\times 5^2\times {\mathrm{79}}^1\times {\mathrm{3539}}^1$

素因数の和:3631

約数の個数: 24

約数和(自身を含む): 35116800

約数和(自身を除く): 14148225

約数列:

[1, 3, 5, 15, 25, 75, 79, 237, 395, 1185, 1975, 3539, 5925, 10617, 17695, 53085, 88475, 265425, 279581, 838743, 1397905, 4193715, 6989525, 20968575]

約数ペア:

[(1, 20968575), (3, 6989525), (5, 4193715), (15, 1397905), (25, 838743), (75, 279581), (79, 265425), (237, 88475), (395, 53085), (1185, 17695), (1975, 10617), (3539, 5925)]