18950965

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{211}}^1$

素因数の和:321

約数の個数: 32

約数和(自身を含む): 26376192

約数和(自身を除く): 7425227

約数列:

[1, 5, 11, 23, 55, 71, 115, 211, 253, 355, 781, 1055, 1265, 1633, 2321, 3905, 4853, 8165, 11605, 14981, 17963, 24265, 53383, 74905, 89815, 164791, 266915, 344563, 823955, 1722815, 3790193, 18950965]

約数ペア:

[(1, 18950965), (5, 3790193), (11, 1722815), (23, 823955), (55, 344563), (71, 266915), (115, 164791), (211, 89815), (253, 74905), (355, 53383), (781, 24265), (1055, 17963), (1265, 14981), (1633, 11605), (2321, 8165), (3905, 4853)]