209525905

素因数分解:

$5^1\times {\mathrm{163}}^1\times {\mathrm{317}}^1\times {\mathrm{811}}^1$

素因数の和:1296

約数の個数: 16

約数和(自身を含む): 254084544

約数和(自身を除く): 44558639

約数列:

[1, 5, 163, 317, 811, 815, 1585, 4055, 51671, 132193, 257087, 258355, 660965, 1285435, 41905181, 209525905]

約数ペア:

[(1, 209525905), (5, 41905181), (163, 1285435), (317, 660965), (811, 258355), (815, 257087), (1585, 132193), (4055, 51671)]