21204513

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{11273}}^1$

素因数の和:11309

約数の個数: 24

約数和(自身を含む): 35174880

約数和(自身を除く): 13970367

約数列:

[1, 3, 9, 11, 19, 33, 57, 99, 171, 209, 627, 1881, 11273, 33819, 101457, 124003, 214187, 372009, 642561, 1116027, 1927683, 2356057, 7068171, 21204513]

約数ペア:

[(1, 21204513), (3, 7068171), (9, 2356057), (11, 1927683), (19, 1116027), (33, 642561), (57, 372009), (99, 214187), (171, 124003), (209, 101457), (627, 33819), (1881, 11273)]