80448400

素因数分解:

$2^4\times 5^2\times {\mathrm{201121}}^1$

素因数の和:201139

約数の個数: 30

約数和(自身を含む): 193278242

約数和(自身を除く): 112829842

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 201121, 402242, 804484, 1005605, 1608968, 2011210, 3217936, 4022420, 5028025, 8044840, 10056050, 16089680, 20112100, 40224200, 80448400]

約数ペア:

[(1, 80448400), (2, 40224200), (4, 20112100), (5, 16089680), (8, 10056050), (10, 8044840), (16, 5028025), (20, 4022420), (25, 3217936), (40, 2011210), (50, 1608968), (80, 1005605), (100, 804484), (200, 402242), (400, 201121)]