398332420

素因数分解:

$2^2\times 5^1\times {\mathrm{67}}^1\times {\mathrm{297263}}^1$

素因数の和:297339

約数の個数: 24

約数和(自身を含む): 848985984

約数和(自身を除く): 450653564

約数列:

[1, 2, 4, 5, 10, 20, 67, 134, 268, 335, 670, 1340, 297263, 594526, 1189052, 1486315, 2972630, 5945260, 19916621, 39833242, 79666484, 99583105, 199166210, 398332420]

約数ペア:

[(1, 398332420), (2, 199166210), (4, 99583105), (5, 79666484), (10, 39833242), (20, 19916621), (67, 5945260), (134, 2972630), (268, 1486315), (335, 1189052), (670, 594526), (1340, 297263)]