21260253

素因数分解:

$3^1\times 7^1\times {\mathrm{163}}^1\times {\mathrm{6211}}^1$

素因数の和:6384

約数の個数: 16

約数和(自身を含む): 32600576

約数和(自身を除く): 11340323

約数列:

[1, 3, 7, 21, 163, 489, 1141, 3423, 6211, 18633, 43477, 130431, 1012393, 3037179, 7086751, 21260253]

約数ペア:

[(1, 21260253), (3, 7086751), (7, 3037179), (21, 1012393), (163, 130431), (489, 43477), (1141, 18633), (3423, 6211)]