18918261

素因数分解:

$3^2\times {\mathrm{41}}^1\times {\mathrm{167}}^1\times {\mathrm{307}}^1$

素因数の和:521

約数の個数: 24

約数和(自身を含む): 28252224

約数和(自身を除く): 9333963

約数列:

[1, 3, 9, 41, 123, 167, 307, 369, 501, 921, 1503, 2763, 6847, 12587, 20541, 37761, 51269, 61623, 113283, 153807, 461421, 2102029, 6306087, 18918261]

約数ペア:

[(1, 18918261), (3, 6306087), (9, 2102029), (41, 461421), (123, 153807), (167, 113283), (307, 61623), (369, 51269), (501, 37761), (921, 20541), (1503, 12587), (2763, 6847)]