38720260

素因数分解:

$2^2\times 5^1\times {\mathrm{491}}^1\times {\mathrm{3943}}^1$

素因数の和:4443

約数の個数: 24

約数和(自身を含む): 81498816

約数和(自身を除く): 42778556

約数列:

[1, 2, 4, 5, 10, 20, 491, 982, 1964, 2455, 3943, 4910, 7886, 9820, 15772, 19715, 39430, 78860, 1936013, 3872026, 7744052, 9680065, 19360130, 38720260]

約数ペア:

[(1, 38720260), (2, 19360130), (4, 9680065), (5, 7744052), (10, 3872026), (20, 1936013), (491, 78860), (982, 39430), (1964, 19715), (2455, 15772), (3943, 9820), (4910, 7886)]