21916893

素因数分解:

$3^1\times {\mathrm{17}}^3\times {\mathrm{1487}}^1$

素因数の和:1541

約数の個数: 16

約数和(自身を含む): 31069440

約数和(自身を除く): 9152547

約数列:

[1, 3, 17, 51, 289, 867, 1487, 4461, 4913, 14739, 25279, 75837, 429743, 1289229, 7305631, 21916893]

約数ペア:

[(1, 21916893), (3, 7305631), (17, 1289229), (51, 429743), (289, 75837), (867, 25279), (1487, 14739), (4461, 4913)]