18997719

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{109}}^2$

素因数の和:275

約数の個数: 24

約数和(自身を含む): 28202832

約数和(自身を除く): 9205113

約数列:

[1, 3, 13, 39, 41, 109, 123, 327, 533, 1417, 1599, 4251, 4469, 11881, 13407, 35643, 58097, 154453, 174291, 463359, 487121, 1461363, 6332573, 18997719]

約数ペア:

[(1, 18997719), (3, 6332573), (13, 1461363), (39, 487121), (41, 463359), (109, 174291), (123, 154453), (327, 58097), (533, 35643), (1417, 13407), (1599, 11881), (4251, 4469)]