20855288

素因数分解:

$2^3\times {\mathrm{53}}^1\times {\mathrm{101}}^1\times {\mathrm{487}}^1$

素因数の和:647

約数の個数: 32

約数和(自身を含む): 40318560

約数和(自身を除く): 19463272

約数列:

[1, 2, 4, 8, 53, 101, 106, 202, 212, 404, 424, 487, 808, 974, 1948, 3896, 5353, 10706, 21412, 25811, 42824, 49187, 51622, 98374, 103244, 196748, 206488, 393496, 2606911, 5213822, 10427644, 20855288]

約数ペア:

[(1, 20855288), (2, 10427644), (4, 5213822), (8, 2606911), (53, 393496), (101, 206488), (106, 196748), (202, 103244), (212, 98374), (404, 51622), (424, 49187), (487, 42824), (808, 25811), (974, 21412), (1948, 10706), (3896, 5353)]