20557071

素因数分解:

$3^6\times {\mathrm{163}}^1\times {\mathrm{173}}^1$

素因数の和:354

約数の個数: 28

約数和(自身を含む): 31189848

約数和(自身を除く): 10632777

約数列:

[1, 3, 9, 27, 81, 163, 173, 243, 489, 519, 729, 1467, 1557, 4401, 4671, 13203, 14013, 28199, 39609, 42039, 84597, 118827, 126117, 253791, 761373, 2284119, 6852357, 20557071]

約数ペア:

[(1, 20557071), (3, 6852357), (9, 2284119), (27, 761373), (81, 253791), (163, 126117), (173, 118827), (243, 84597), (489, 42039), (519, 39609), (729, 28199), (1467, 14013), (1557, 13203), (4401, 4671)]