666823340

素因数分解:

$2^2\times 5^1\times {\mathrm{1409}}^1\times {\mathrm{23663}}^1$

素因数の和:25081

約数の個数: 24

約数和(自身を含む): 1401382080

約数和(自身を除く): 734558740

約数列:

[1, 2, 4, 5, 10, 20, 1409, 2818, 5636, 7045, 14090, 23663, 28180, 47326, 94652, 118315, 236630, 473260, 33341167, 66682334, 133364668, 166705835, 333411670, 666823340]

約数ペア:

[(1, 666823340), (2, 333411670), (4, 166705835), (5, 133364668), (10, 66682334), (20, 33341167), (1409, 473260), (2818, 236630), (5636, 118315), (7045, 94652), (14090, 47326), (23663, 28180)]