18538312

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{397}}^1\times {\mathrm{449}}^1$

素因数の和:865

約数の個数: 32

約数和(自身を含む): 37611000

約数和(自身を除く): 19072688

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 397, 449, 794, 898, 1588, 1796, 3176, 3592, 5161, 5837, 10322, 11674, 20644, 23348, 41288, 46696, 178253, 356506, 713012, 1426024, 2317289, 4634578, 9269156, 18538312]

約数ペア:

[(1, 18538312), (2, 9269156), (4, 4634578), (8, 2317289), (13, 1426024), (26, 713012), (52, 356506), (104, 178253), (397, 46696), (449, 41288), (794, 23348), (898, 20644), (1588, 11674), (1796, 10322), (3176, 5837), (3592, 5161)]