21215761

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{269}}^1\times {\mathrm{593}}^1$

素因数の和:888

約数の個数: 16

約数和(自身を含む): 25660800

約数和(自身を除く): 4445039

約数列:

[1, 7, 19, 133, 269, 593, 1883, 4151, 5111, 11267, 35777, 78869, 159517, 1116619, 3030823, 21215761]

約数ペア:

[(1, 21215761), (7, 3030823), (19, 1116619), (133, 159517), (269, 78869), (593, 35777), (1883, 11267), (4151, 5111)]