20639020

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{60703}}^1$

素因数の和:60729

約数の個数: 24

約数和(自身を含む): 45892224

約数和(自身を除く): 25253204

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 60703, 121406, 242812, 303515, 607030, 1031951, 1214060, 2063902, 4127804, 5159755, 10319510, 20639020]

約数ペア:

[(1, 20639020), (2, 10319510), (4, 5159755), (5, 4127804), (10, 2063902), (17, 1214060), (20, 1031951), (34, 607030), (68, 303515), (85, 242812), (170, 121406), (340, 60703)]