1991891245

素因数分解:

$5^1\times {\mathrm{29}}^1\times {\mathrm{311}}^1\times {\mathrm{44171}}^1$

素因数の和:44516

約数の個数: 16

約数和(自身を含む): 2480699520

約数和(自身を除く): 488808275

約数列:

[1, 5, 29, 145, 311, 1555, 9019, 44171, 45095, 220855, 1280959, 6404795, 13737181, 68685905, 398378249, 1991891245]

約数ペア:

[(1, 1991891245), (5, 398378249), (29, 68685905), (145, 13737181), (311, 6404795), (1555, 1280959), (9019, 220855), (44171, 45095)]