20305551

素因数分解:

$3^1\times 7^2\times {\mathrm{47}}^1\times {\mathrm{2939}}^1$

素因数の和:3003

約数の個数: 24

約数和(自身を含む): 32175360

約数和(自身を除く): 11869809

約数列:

[1, 3, 7, 21, 47, 49, 141, 147, 329, 987, 2303, 2939, 6909, 8817, 20573, 61719, 138133, 144011, 414399, 432033, 966931, 2900793, 6768517, 20305551]

約数ペア:

[(1, 20305551), (3, 6768517), (7, 2900793), (21, 966931), (47, 432033), (49, 414399), (141, 144011), (147, 138133), (329, 61719), (987, 20573), (2303, 8817), (2939, 6909)]