215963391

素因数分解:

$3^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{157}}^1\times {\mathrm{2113}}^1$

素因数の和:2311

約数の個数: 32

約数和(自身を含む): 342028288

約数和(自身を除く): 126064897

約数列:

[1, 3, 7, 21, 31, 93, 157, 217, 471, 651, 1099, 2113, 3297, 4867, 6339, 14601, 14791, 34069, 44373, 65503, 102207, 196509, 331741, 458521, 995223, 1375563, 2322187, 6966561, 10283971, 30851913, 71987797, 215963391]

約数ペア:

[(1, 215963391), (3, 71987797), (7, 30851913), (21, 10283971), (31, 6966561), (93, 2322187), (157, 1375563), (217, 995223), (471, 458521), (651, 331741), (1099, 196509), (2113, 102207), (3297, 65503), (4867, 44373), (6339, 34069), (14601, 14791)]