18219573

素因数分解:

$3^4\times {\mathrm{43}}^1\times {\mathrm{5231}}^1$

素因数の和:5286

約数の個数: 20

約数和(自身を含む): 27855168

約数和(自身を除く): 9635595

約数列:

[1, 3, 9, 27, 43, 81, 129, 387, 1161, 3483, 5231, 15693, 47079, 141237, 224933, 423711, 674799, 2024397, 6073191, 18219573]

約数ペア:

[(1, 18219573), (3, 6073191), (9, 2024397), (27, 674799), (43, 423711), (81, 224933), (129, 141237), (387, 47079), (1161, 15693), (3483, 5231)]