21497245

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{55837}}^1$

素因数の和:55860

約数の個数: 16

約数和(自身を含む): 32162688

約数和(自身を除く): 10665443

約数列:

[1, 5, 7, 11, 35, 55, 77, 385, 55837, 279185, 390859, 614207, 1954295, 3071035, 4299449, 21497245]

約数ペア:

[(1, 21497245), (5, 4299449), (7, 3071035), (11, 1954295), (35, 614207), (55, 390859), (77, 279185), (385, 55837)]