21091816

素因数分解:

$2^3\times {\mathrm{29}}^1\times {\mathrm{229}}^1\times {\mathrm{397}}^1$

素因数の和:661

約数の個数: 32

約数和(自身を含む): 41193000

約数和(自身を除く): 20101184

約数列:

[1, 2, 4, 8, 29, 58, 116, 229, 232, 397, 458, 794, 916, 1588, 1832, 3176, 6641, 11513, 13282, 23026, 26564, 46052, 53128, 90913, 92104, 181826, 363652, 727304, 2636477, 5272954, 10545908, 21091816]

約数ペア:

[(1, 21091816), (2, 10545908), (4, 5272954), (8, 2636477), (29, 727304), (58, 363652), (116, 181826), (229, 92104), (232, 90913), (397, 53128), (458, 46052), (794, 26564), (916, 23026), (1588, 13282), (1832, 11513), (3176, 6641)]