20772778

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{89}}^1\times {\mathrm{191}}^1$

素因数の和:342

約数の個数: 32

約数和(自身を含む): 34836480

約数和(自身を除く): 14063702

約数列:

[1, 2, 13, 26, 47, 89, 94, 178, 191, 382, 611, 1157, 1222, 2314, 2483, 4183, 4966, 8366, 8977, 16999, 17954, 33998, 54379, 108758, 116701, 220987, 233402, 441974, 798953, 1597906, 10386389, 20772778]

約数ペア:

[(1, 20772778), (2, 10386389), (13, 1597906), (26, 798953), (47, 441974), (89, 233402), (94, 220987), (178, 116701), (191, 108758), (382, 54379), (611, 33998), (1157, 17954), (1222, 16999), (2314, 8977), (2483, 8366), (4183, 4966)]