21231915

素因数分解:

$3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{48809}}^1$

素因数の和:48846

約数の個数: 16

約数和(自身を含む): 35143200

約数和(自身を除く): 13911285

約数列:

[1, 3, 5, 15, 29, 87, 145, 435, 48809, 146427, 244045, 732135, 1415461, 4246383, 7077305, 21231915]

約数ペア:

[(1, 21231915), (3, 7077305), (5, 4246383), (15, 1415461), (29, 732135), (87, 244045), (145, 146427), (435, 48809)]