21025837

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{149}}^1\times {\mathrm{1061}}^1$

素因数の和:1236

約数の個数: 16

約数和(自身を含む): 25488000

約数和(自身を除く): 4462163

約数列:

[1, 7, 19, 133, 149, 1043, 1061, 2831, 7427, 19817, 20159, 141113, 158089, 1106623, 3003691, 21025837]

約数ペア:

[(1, 21025837), (7, 3003691), (19, 1106623), (133, 158089), (149, 141113), (1043, 20159), (1061, 19817), (2831, 7427)]