21605997

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{60521}}^1$

素因数の和:60548

約数の個数: 16

約数和(自身を含む): 34860672

約数和(自身を除く): 13254675

約数列:

[1, 3, 7, 17, 21, 51, 119, 357, 60521, 181563, 423647, 1028857, 1270941, 3086571, 7201999, 21605997]

約数ペア:

[(1, 21605997), (3, 7201999), (7, 3086571), (17, 1270941), (21, 1028857), (51, 423647), (119, 181563), (357, 60521)]