21087715

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{127}}^1\times {\mathrm{3019}}^1$

素因数の和:3162

約数の個数: 16

約数和(自身を含む): 27832320

約数和(自身を除く): 6744605

約数列:

[1, 5, 11, 55, 127, 635, 1397, 3019, 6985, 15095, 33209, 166045, 383413, 1917065, 4217543, 21087715]

約数ペア:

[(1, 21087715), (5, 4217543), (11, 1917065), (55, 383413), (127, 166045), (635, 33209), (1397, 15095), (3019, 6985)]