20871153

素因数分解:

$3^2\times {\mathrm{31}}^1\times {\mathrm{239}}^1\times {\mathrm{313}}^1$

素因数の和:589

約数の個数: 24

約数和(自身を含む): 31349760

約数和(自身を除く): 10478607

約数列:

[1, 3, 9, 31, 93, 239, 279, 313, 717, 939, 2151, 2817, 7409, 9703, 22227, 29109, 66681, 74807, 87327, 224421, 673263, 2319017, 6957051, 20871153]

約数ペア:

[(1, 20871153), (3, 6957051), (9, 2319017), (31, 673263), (93, 224421), (239, 87327), (279, 74807), (313, 66681), (717, 29109), (939, 22227), (2151, 9703), (2817, 7409)]