21479215

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{311}}^1\times {\mathrm{727}}^1$

素因数の和:1062

約数の個数: 16

約数和(自身を含む): 27256320

約数和(自身を除く): 5777105

約数列:

[1, 5, 19, 95, 311, 727, 1555, 3635, 5909, 13813, 29545, 69065, 226097, 1130485, 4295843, 21479215]

約数ペア:

[(1, 21479215), (5, 4295843), (19, 1130485), (95, 226097), (311, 69065), (727, 29545), (1555, 13813), (3635, 5909)]