408077840

素因数分解:

$2^4\times 5^1\times {\mathrm{5100973}}^1$

素因数の和:5100986

約数の個数: 20

約数和(自身を含む): 948781164

約数和(自身を除く): 540703324

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 5100973, 10201946, 20403892, 25504865, 40807784, 51009730, 81615568, 102019460, 204038920, 408077840]

約数ペア:

[(1, 408077840), (2, 204038920), (4, 102019460), (5, 81615568), (8, 51009730), (10, 40807784), (16, 25504865), (20, 20403892), (40, 10201946), (80, 5100973)]