21099215

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{5417}}^1$

素因数の和:5482

約数の個数: 16

約数和(自身を含む): 27306720

約数和(自身を除く): 6207505

約数列:

[1, 5, 19, 41, 95, 205, 779, 3895, 5417, 27085, 102923, 222097, 514615, 1110485, 4219843, 21099215]

約数ペア:

[(1, 21099215), (5, 4219843), (19, 1110485), (41, 514615), (95, 222097), (205, 102923), (779, 27085), (3895, 5417)]