15721617

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{67}}^1\times {\mathrm{107}}^1$

素因数の和:237

約数の個数: 32

約数和(自身を含む): 23265792

約数和(自身を除く): 7544175

約数列:

[1, 3, 17, 43, 51, 67, 107, 129, 201, 321, 731, 1139, 1819, 2193, 2881, 3417, 4601, 5457, 7169, 8643, 13803, 21507, 48977, 78217, 121873, 146931, 234651, 308267, 365619, 924801, 5240539, 15721617]

約数ペア:

[(1, 15721617), (3, 5240539), (17, 924801), (43, 365619), (51, 308267), (67, 234651), (107, 146931), (129, 121873), (201, 78217), (321, 48977), (731, 21507), (1139, 13803), (1819, 8643), (2193, 7169), (2881, 5457), (3417, 4601)]