20917920

素因数分解:

$2^5\times 3^1\times 5^1\times {\mathrm{43579}}^1$

素因数の和:43597

約数の個数: 48

約数和(自身を含む): 65892960

約数和(自身を除く): 44975040

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 80, 96, 120, 160, 240, 480, 43579, 87158, 130737, 174316, 217895, 261474, 348632, 435790, 522948, 653685, 697264, 871580, 1045896, 1307370, 1394528, 1743160, 2091792, 2614740, 3486320, 4183584, 5229480, 6972640, 10458960, 20917920]

約数ペア:

[(1, 20917920), (2, 10458960), (3, 6972640), (4, 5229480), (5, 4183584), (6, 3486320), (8, 2614740), (10, 2091792), (12, 1743160), (15, 1394528), (16, 1307370), (20, 1045896), (24, 871580), (30, 697264), (32, 653685), (40, 522948), (48, 435790), (60, 348632), (80, 261474), (96, 217895), (120, 174316), (160, 130737), (240, 87158), (480, 43579)]