19882420

素因数分解:

$2^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{18757}}^1$

素因数の和:18819

約数の個数: 24

約数和(自身を含む): 42543144

約数和(自身を除く): 22660724

約数列:

[1, 2, 4, 5, 10, 20, 53, 106, 212, 265, 530, 1060, 18757, 37514, 75028, 93785, 187570, 375140, 994121, 1988242, 3976484, 4970605, 9941210, 19882420]

約数ペア:

[(1, 19882420), (2, 9941210), (4, 4970605), (5, 3976484), (10, 1988242), (20, 994121), (53, 375140), (106, 187570), (212, 93785), (265, 75028), (530, 37514), (1060, 18757)]