21000983941

素因数分解:

$7^2\times {\mathrm{409}}^1\times {\mathrm{457}}^1\times {\mathrm{2293}}^1$

素因数の和:3173

約数の個数: 24

約数和(自身を含む): 24553737240

約数和(自身を除く): 3552753299

約数列:

[1, 7, 49, 409, 457, 2293, 2863, 3199, 16051, 20041, 22393, 112357, 186913, 937837, 1047901, 1308391, 6564859, 7335307, 9158737, 45954013, 51347149, 428591509, 3000140563, 21000983941]

約数ペア:

[(1, 21000983941), (7, 3000140563), (49, 428591509), (409, 51347149), (457, 45954013), (2293, 9158737), (2863, 7335307), (3199, 6564859), (16051, 1308391), (20041, 1047901), (22393, 937837), (112357, 186913)]