894400420

素因数分解:

$2^2\times 5^1\times {\mathrm{67}}^1\times {\mathrm{667463}}^1$

素因数の和:667539

約数の個数: 24

約数和(自身を含む): 1906277184

約数和(自身を除く): 1011876764

約数列:

[1, 2, 4, 5, 10, 20, 67, 134, 268, 335, 670, 1340, 667463, 1334926, 2669852, 3337315, 6674630, 13349260, 44720021, 89440042, 178880084, 223600105, 447200210, 894400420]

約数ペア:

[(1, 894400420), (2, 447200210), (4, 223600105), (5, 178880084), (10, 89440042), (20, 44720021), (67, 13349260), (134, 6674630), (268, 3337315), (335, 2669852), (670, 1334926), (1340, 667463)]