20213865

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{64171}}^1$

素因数の和:64189

約数の個数: 24

約数和(自身を含む): 40043328

約数和(自身を除く): 19829463

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 315, 64171, 192513, 320855, 449197, 577539, 962565, 1347591, 2245985, 2887695, 4042773, 6737955, 20213865]

約数ペア:

[(1, 20213865), (3, 6737955), (5, 4042773), (7, 2887695), (9, 2245985), (15, 1347591), (21, 962565), (35, 577539), (45, 449197), (63, 320855), (105, 192513), (315, 64171)]