20858271

素因数分解:

$3^1\times 7^2\times {\mathrm{47}}^1\times {\mathrm{3019}}^1$

素因数の和:3083

約数の個数: 24

約数和(自身を含む): 33050880

約数和(自身を除く): 12192609

約数列:

[1, 3, 7, 21, 47, 49, 141, 147, 329, 987, 2303, 3019, 6909, 9057, 21133, 63399, 141893, 147931, 425679, 443793, 993251, 2979753, 6952757, 20858271]

約数ペア:

[(1, 20858271), (3, 6952757), (7, 2979753), (21, 993251), (47, 443793), (49, 425679), (141, 147931), (147, 141893), (329, 63399), (987, 21133), (2303, 9057), (3019, 6909)]