21407240

素因数分解:

$2^3\times 5^1\times {\mathrm{535181}}^1$

素因数の和:535192

約数の個数: 16

約数和(自身を含む): 48166380

約数和(自身を除く): 26759140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 535181, 1070362, 2140724, 2675905, 4281448, 5351810, 10703620, 21407240]

約数ペア:

[(1, 21407240), (2, 10703620), (4, 5351810), (5, 4281448), (8, 2675905), (10, 2140724), (20, 1070362), (40, 535181)]