21288056

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{140053}}^1$

素因数の和:140078

約数の個数: 16

約数和(自身を含む): 42016200

約数和(自身を除く): 20728144

約数列:

[1, 2, 4, 8, 19, 38, 76, 152, 140053, 280106, 560212, 1120424, 2661007, 5322014, 10644028, 21288056]

約数ペア:

[(1, 21288056), (2, 10644028), (4, 5322014), (8, 2661007), (19, 1120424), (38, 560212), (76, 280106), (152, 140053)]