987965

素因数分解:

$5^1\times {\mathrm{11}}^2\times {\mathrm{23}}^1\times {\mathrm{71}}^1$

素因数の和:121

約数の個数: 24

約数和(自身を含む): 1378944

約数和(自身を除く): 390979

約数列:

[1, 5, 11, 23, 55, 71, 115, 121, 253, 355, 605, 781, 1265, 1633, 2783, 3905, 8165, 8591, 13915, 17963, 42955, 89815, 197593, 987965]

約数ペア:

[(1, 987965), (5, 197593), (11, 89815), (23, 42955), (55, 17963), (71, 13915), (115, 8591), (121, 8165), (253, 3905), (355, 2783), (605, 1633), (781, 1265)]