20875840

素因数分解:

$2^6\times 5^1\times {\mathrm{89}}^1\times {\mathrm{733}}^1$

素因数の和:839

約数の個数: 56

約数和(自身を含む): 50337720

約数和(自身を除く): 29461880

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 89, 160, 178, 320, 356, 445, 712, 733, 890, 1424, 1466, 1780, 2848, 2932, 3560, 3665, 5696, 5864, 7120, 7330, 11728, 14240, 14660, 23456, 28480, 29320, 46912, 58640, 65237, 117280, 130474, 234560, 260948, 326185, 521896, 652370, 1043792, 1304740, 2087584, 2609480, 4175168, 5218960, 10437920, 20875840]

約数ペア:

[(1, 20875840), (2, 10437920), (4, 5218960), (5, 4175168), (8, 2609480), (10, 2087584), (16, 1304740), (20, 1043792), (32, 652370), (40, 521896), (64, 326185), (80, 260948), (89, 234560), (160, 130474), (178, 117280), (320, 65237), (356, 58640), (445, 46912), (712, 29320), (733, 28480), (890, 23456), (1424, 14660), (1466, 14240), (1780, 11728), (2848, 7330), (2932, 7120), (3560, 5864), (3665, 5696)]