21282915

素因数分解:

$3^1\times 5^1\times {\mathrm{131}}^1\times {\mathrm{10831}}^1$

素因数の和:10970

約数の個数: 16

約数和(自身を含む): 34315776

約数和(自身を除く): 13032861

約数列:

[1, 3, 5, 15, 131, 393, 655, 1965, 10831, 32493, 54155, 162465, 1418861, 4256583, 7094305, 21282915]

約数ペア:

[(1, 21282915), (3, 7094305), (5, 4256583), (15, 1418861), (131, 162465), (393, 54155), (655, 32493), (1965, 10831)]