40384420

素因数分解:

$2^2\times 5^1\times {\mathrm{271}}^1\times {\mathrm{7451}}^1$

素因数の和:7731

約数の個数: 24

約数和(自身を含む): 85131648

約数和(自身を除く): 44747228

約数列:

[1, 2, 4, 5, 10, 20, 271, 542, 1084, 1355, 2710, 5420, 7451, 14902, 29804, 37255, 74510, 149020, 2019221, 4038442, 8076884, 10096105, 20192210, 40384420]

約数ペア:

[(1, 40384420), (2, 20192210), (4, 10096105), (5, 8076884), (10, 4038442), (20, 2019221), (271, 149020), (542, 74510), (1084, 37255), (1355, 29804), (2710, 14902), (5420, 7451)]