21240045

素因数分解:

$3^2\times 5^1\times {\mathrm{113}}^1\times {\mathrm{4177}}^1$

素因数の和:4301

約数の個数: 24

約数和(自身を含む): 37150776

約数和(自身を除く): 15910731

約数列:

[1, 3, 5, 9, 15, 45, 113, 339, 565, 1017, 1695, 4177, 5085, 12531, 20885, 37593, 62655, 187965, 472001, 1416003, 2360005, 4248009, 7080015, 21240045]

約数ペア:

[(1, 21240045), (3, 7080015), (5, 4248009), (9, 2360005), (15, 1416003), (45, 472001), (113, 187965), (339, 62655), (565, 37593), (1017, 20885), (1695, 12531), (4177, 5085)]