1638220887

素因数分解:

$3^2\times {\mathrm{41}}^1\times {\mathrm{229}}^1\times {\mathrm{19387}}^1$

素因数の和:19663

約数の個数: 24

約数和(自身を含む): 2434745040

約数和(自身を除く): 796524153

約数列:

[1, 3, 9, 41, 123, 229, 369, 687, 2061, 9389, 19387, 28167, 58161, 84501, 174483, 794867, 2384601, 4439623, 7153803, 13318869, 39956607, 182024543, 546073629, 1638220887]

約数ペア:

[(1, 1638220887), (3, 546073629), (9, 182024543), (41, 39956607), (123, 13318869), (229, 7153803), (369, 4439623), (687, 2384601), (2061, 794867), (9389, 174483), (19387, 84501), (28167, 58161)]