21289215

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{74699}}^1$

素因数の和:74726

約数の個数: 16

約数和(自身を含む): 35856000

約数和(自身を除く): 14566785

約数列:

[1, 3, 5, 15, 19, 57, 95, 285, 74699, 224097, 373495, 1120485, 1419281, 4257843, 7096405, 21289215]

約数ペア:

[(1, 21289215), (3, 7096405), (5, 4257843), (15, 1419281), (19, 1120485), (57, 373495), (95, 224097), (285, 74699)]