20189560

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{7109}}^1$

素因数の和:7191

約数の個数: 32

約数和(自身を含む): 46072800

約数和(自身を除く): 25883240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 2840, 7109, 14218, 28436, 35545, 56872, 71090, 142180, 284360, 504739, 1009478, 2018956, 2523695, 4037912, 5047390, 10094780, 20189560]

約数ペア:

[(1, 20189560), (2, 10094780), (4, 5047390), (5, 4037912), (8, 2523695), (10, 2018956), (20, 1009478), (40, 504739), (71, 284360), (142, 142180), (284, 71090), (355, 56872), (568, 35545), (710, 28436), (1420, 14218), (2840, 7109)]