19789917

素因数分解:

$3^1\times 7^1\times {\mathrm{239}}^1\times {\mathrm{3943}}^1$

素因数の和:4192

約数の個数: 16

約数和(自身を含む): 30289920

約数和(自身を除く): 10500003

約数列:

[1, 3, 7, 21, 239, 717, 1673, 3943, 5019, 11829, 27601, 82803, 942377, 2827131, 6596639, 19789917]

約数ペア:

[(1, 19789917), (3, 6596639), (7, 2827131), (21, 942377), (239, 82803), (717, 27601), (1673, 11829), (3943, 5019)]