128987420

素因数分解:

$2^2\times 5^1\times {\mathrm{937}}^1\times {\mathrm{6883}}^1$

素因数の和:7829

約数の個数: 24

約数和(自身を含む): 271202064

約数和(自身を除く): 142214644

約数列:

[1, 2, 4, 5, 10, 20, 937, 1874, 3748, 4685, 6883, 9370, 13766, 18740, 27532, 34415, 68830, 137660, 6449371, 12898742, 25797484, 32246855, 64493710, 128987420]

約数ペア:

[(1, 128987420), (2, 64493710), (4, 32246855), (5, 25797484), (10, 12898742), (20, 6449371), (937, 137660), (1874, 68830), (3748, 34415), (4685, 27532), (6883, 18740), (9370, 13766)]