64998580

素因数分解:

$2^2\times 5^1\times {\mathrm{491}}^1\times {\mathrm{6619}}^1$

素因数の和:7119

約数の個数: 24

約数和(自身を含む): 136795680

約数和(自身を除く): 71797100

約数列:

[1, 2, 4, 5, 10, 20, 491, 982, 1964, 2455, 4910, 6619, 9820, 13238, 26476, 33095, 66190, 132380, 3249929, 6499858, 12999716, 16249645, 32499290, 64998580]

約数ペア:

[(1, 64998580), (2, 32499290), (4, 16249645), (5, 12999716), (10, 6499858), (20, 3249929), (491, 132380), (982, 66190), (1964, 33095), (2455, 26476), (4910, 13238), (6619, 9820)]