12816040

素因数分解:

$2^3\times 5^1\times {\mathrm{320401}}^1$

素因数の和:320412

約数の個数: 16

約数和(自身を含む): 28836180

約数和(自身を除く): 16020140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 320401, 640802, 1281604, 1602005, 2563208, 3204010, 6408020, 12816040]

約数ペア:

[(1, 12816040), (2, 6408020), (4, 3204010), (5, 2563208), (8, 1602005), (10, 1281604), (20, 640802), (40, 320401)]