18418071

素因数分解:

$3^1\times 7^4\times {\mathrm{2557}}^1$

素因数の和:2588

約数の個数: 20

約数和(自身を含む): 28659832

約数和(自身を除く): 10241761

約数列:

[1, 3, 7, 21, 49, 147, 343, 1029, 2401, 2557, 7203, 7671, 17899, 53697, 125293, 375879, 877051, 2631153, 6139357, 18418071]

約数ペア:

[(1, 18418071), (3, 6139357), (7, 2631153), (21, 877051), (49, 375879), (147, 125293), (343, 53697), (1029, 17899), (2401, 7671), (2557, 7203)]