408076720

素因数分解:

$2^4\times 5^1\times {\mathrm{5100959}}^1$

素因数の和:5100972

約数の個数: 20

約数和(自身を含む): 948778560

約数和(自身を除く): 540701840

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 5100959, 10201918, 20403836, 25504795, 40807672, 51009590, 81615344, 102019180, 204038360, 408076720]

約数ペア:

[(1, 408076720), (2, 204038360), (4, 102019180), (5, 81615344), (8, 51009590), (10, 40807672), (16, 25504795), (20, 20403836), (40, 10201918), (80, 5100959)]