21630310

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{12799}}^1$

素因数の和:12832

約数の個数: 24

約数和(自身を含む): 42163200

約数和(自身を除く): 20532890

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 169, 338, 845, 1690, 12799, 25598, 63995, 127990, 166387, 332774, 831935, 1663870, 2163031, 4326062, 10815155, 21630310]

約数ペア:

[(1, 21630310), (2, 10815155), (5, 4326062), (10, 2163031), (13, 1663870), (26, 831935), (65, 332774), (130, 166387), (169, 127990), (338, 63995), (845, 25598), (1690, 12799)]