660954640

素因数分解:

$2^4\times 5^1\times {\mathrm{8261933}}^1$

素因数の和:8261946

約数の個数: 20

約数和(自身を含む): 1536719724

約数和(自身を除く): 875765084

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 8261933, 16523866, 33047732, 41309665, 66095464, 82619330, 132190928, 165238660, 330477320, 660954640]

約数ペア:

[(1, 660954640), (2, 330477320), (4, 165238660), (5, 132190928), (8, 82619330), (10, 66095464), (16, 41309665), (20, 33047732), (40, 16523866), (80, 8261933)]