2650420

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{1489}}^1$

素因数の和:1587

約数の個数: 24

約数和(自身を含む): 5632200

約数和(自身を除く): 2981780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890, 1489, 1780, 2978, 5956, 7445, 14890, 29780, 132521, 265042, 530084, 662605, 1325210, 2650420]

約数ペア:

[(1, 2650420), (2, 1325210), (4, 662605), (5, 530084), (10, 265042), (20, 132521), (89, 29780), (178, 14890), (356, 7445), (445, 5956), (890, 2978), (1489, 1780)]