217038820

素因数分解:

$2^2\times 5^1\times {\mathrm{211}}^1\times {\mathrm{51431}}^1$

素因数の和:51651

約数の個数: 24

約数和(自身を含む): 457950528

約数和(自身を除く): 240911708

約数列:

[1, 2, 4, 5, 10, 20, 211, 422, 844, 1055, 2110, 4220, 51431, 102862, 205724, 257155, 514310, 1028620, 10851941, 21703882, 43407764, 54259705, 108519410, 217038820]

約数ペア:

[(1, 217038820), (2, 108519410), (4, 54259705), (5, 43407764), (10, 21703882), (20, 10851941), (211, 1028620), (422, 514310), (844, 257155), (1055, 205724), (2110, 102862), (4220, 51431)]