21087587

素因数分解:

${\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{487}}^1$

素因数の和:602

約数の個数: 16

約数和(自身を含む): 23189760

約数和(自身を除く): 2102173

約数列:

[1, 19, 43, 53, 487, 817, 1007, 2279, 9253, 20941, 25811, 43301, 397879, 490409, 1109873, 21087587]

約数ペア:

[(1, 21087587), (19, 1109873), (43, 490409), (53, 397879), (487, 43301), (817, 25811), (1007, 20941), (2279, 9253)]