18789101620

素因数分解:

$2^2\times 5^1\times {\mathrm{1399}}^1\times {\mathrm{671519}}^1$

素因数の和:672927

約数の個数: 24

約数和(自身を含む): 39485376000

約数和(自身を除く): 20696274380

約数列:

[1, 2, 4, 5, 10, 20, 1399, 2798, 5596, 6995, 13990, 27980, 671519, 1343038, 2686076, 3357595, 6715190, 13430380, 939455081, 1878910162, 3757820324, 4697275405, 9394550810, 18789101620]

約数ペア:

[(1, 18789101620), (2, 9394550810), (4, 4697275405), (5, 3757820324), (10, 1878910162), (20, 939455081), (1399, 13430380), (2798, 6715190), (5596, 3357595), (6995, 2686076), (13990, 1343038), (27980, 671519)]