42220647

素因数分解:

$3^2\times 7^1\times {\mathrm{71}}^1\times {\mathrm{9439}}^1$

素因数の和:9523

約数の個数: 24

約数和(自身を含む): 70686720

約数和(自身を除く): 28466073

約数列:

[1, 3, 7, 9, 21, 63, 71, 213, 497, 639, 1491, 4473, 9439, 28317, 66073, 84951, 198219, 594657, 670169, 2010507, 4691183, 6031521, 14073549, 42220647]

約数ペア:

[(1, 42220647), (3, 14073549), (7, 6031521), (9, 4691183), (21, 2010507), (63, 670169), (71, 594657), (213, 198219), (497, 84951), (639, 66073), (1491, 28317), (4473, 9439)]