20909260

素因数分解:

$2^2\times 5^1\times {\mathrm{157}}^1\times {\mathrm{6659}}^1$

素因数の和:6825

約数の個数: 24

約数和(自身を含む): 44195760

約数和(自身を除く): 23286500

約数列:

[1, 2, 4, 5, 10, 20, 157, 314, 628, 785, 1570, 3140, 6659, 13318, 26636, 33295, 66590, 133180, 1045463, 2090926, 4181852, 5227315, 10454630, 20909260]

約数ペア:

[(1, 20909260), (2, 10454630), (4, 5227315), (5, 4181852), (10, 2090926), (20, 1045463), (157, 133180), (314, 66590), (628, 33295), (785, 26636), (1570, 13318), (3140, 6659)]