400340

素因数分解:

$2^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{541}}^1$

素因数の和:587

約数の個数: 24

約数和(自身を含む): 865032

約数和(自身を除く): 464692

約数列:

[1, 2, 4, 5, 10, 20, 37, 74, 148, 185, 370, 541, 740, 1082, 2164, 2705, 5410, 10820, 20017, 40034, 80068, 100085, 200170, 400340]

約数ペア:

[(1, 400340), (2, 200170), (4, 100085), (5, 80068), (10, 40034), (20, 20017), (37, 10820), (74, 5410), (148, 2705), (185, 2164), (370, 1082), (541, 740)]