138428540

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{87613}}^1$

素因数の和:87701

約数の個数: 24

約数和(自身を含む): 294383040

約数和(自身を除く): 155954500

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 316, 395, 790, 1580, 87613, 175226, 350452, 438065, 876130, 1752260, 6921427, 13842854, 27685708, 34607135, 69214270, 138428540]

約数ペア:

[(1, 138428540), (2, 69214270), (4, 34607135), (5, 27685708), (10, 13842854), (20, 6921427), (79, 1752260), (158, 876130), (316, 438065), (395, 350452), (790, 175226), (1580, 87613)]