21913215

素因数分解:

$3^1\times 5^1\times {\mathrm{127}}^1\times {\mathrm{11503}}^1$

素因数の和:11638

約数の個数: 16

約数和(自身を含む): 35340288

約数和(自身を除く): 13427073

約数列:

[1, 3, 5, 15, 127, 381, 635, 1905, 11503, 34509, 57515, 172545, 1460881, 4382643, 7304405, 21913215]

約数ペア:

[(1, 21913215), (3, 7304405), (5, 4382643), (15, 1460881), (127, 172545), (381, 57515), (635, 34509), (1905, 11503)]