81522800

素因数分解:

$2^4\times 5^2\times {\mathrm{203807}}^1$

素因数の和:203825

約数の個数: 30

約数和(自身を含む): 195859488

約数和(自身を除く): 114336688

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 203807, 407614, 815228, 1019035, 1630456, 2038070, 3260912, 4076140, 5095175, 8152280, 10190350, 16304560, 20380700, 40761400, 81522800]

約数ペア:

[(1, 81522800), (2, 40761400), (4, 20380700), (5, 16304560), (8, 10190350), (10, 8152280), (16, 5095175), (20, 4076140), (25, 3260912), (40, 2038070), (50, 1630456), (80, 1019035), (100, 815228), (200, 407614), (400, 203807)]