201023720

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{70783}}^1$

素因数の和:70865

約数の個数: 32

約数和(自身を含む): 458680320

約数和(自身を除く): 257656600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 2840, 70783, 141566, 283132, 353915, 566264, 707830, 1415660, 2831320, 5025593, 10051186, 20102372, 25127965, 40204744, 50255930, 100511860, 201023720]

約数ペア:

[(1, 201023720), (2, 100511860), (4, 50255930), (5, 40204744), (8, 25127965), (10, 20102372), (20, 10051186), (40, 5025593), (71, 2831320), (142, 1415660), (284, 707830), (355, 566264), (568, 353915), (710, 283132), (1420, 141566), (2840, 70783)]