20475399

素因数分解:

$3^1\times 7^1\times {\mathrm{439}}^1\times {\mathrm{2221}}^1$

素因数の和:2670

約数の個数: 16

約数和(自身を含む): 31285760

約数和(自身を除く): 10810361

約数列:

[1, 3, 7, 21, 439, 1317, 2221, 3073, 6663, 9219, 15547, 46641, 975019, 2925057, 6825133, 20475399]

約数ペア:

[(1, 20475399), (3, 6825133), (7, 2925057), (21, 975019), (439, 46641), (1317, 15547), (2221, 9219), (3073, 6663)]