66908860

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{77801}}^1$

素因数の和:77853

約数の個数: 24

約数和(自身を含む): 143778096

約数和(自身を除く): 76869236

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 77801, 155602, 311204, 389005, 778010, 1556020, 3345443, 6690886, 13381772, 16727215, 33454430, 66908860]

約数ペア:

[(1, 66908860), (2, 33454430), (4, 16727215), (5, 13381772), (10, 6690886), (20, 3345443), (43, 1556020), (86, 778010), (172, 389005), (215, 311204), (430, 155602), (860, 77801)]