20347677

素因数分解:

$3^2\times 7^1\times {\mathrm{71}}^1\times {\mathrm{4549}}^1$

素因数の和:4633

約数の個数: 24

約数和(自身を含む): 34070400

約数和(自身を除く): 13722723

約数列:

[1, 3, 7, 9, 21, 63, 71, 213, 497, 639, 1491, 4473, 4549, 13647, 31843, 40941, 95529, 286587, 322979, 968937, 2260853, 2906811, 6782559, 20347677]

約数ペア:

[(1, 20347677), (3, 6782559), (7, 2906811), (9, 2260853), (21, 968937), (63, 322979), (71, 286587), (213, 95529), (497, 40941), (639, 31843), (1491, 13647), (4473, 4549)]