784566740

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{487}}^1\times {\mathrm{739}}^1$

素因数の和:1344

約数の個数: 48

約数和(自身を含む): 1668374400

約数和(自身を除く): 883807660

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 487, 545, 739, 974, 1090, 1478, 1948, 2180, 2435, 2956, 3695, 4870, 7390, 9740, 14780, 53083, 80551, 106166, 161102, 212332, 265415, 322204, 359893, 402755, 530830, 719786, 805510, 1061660, 1439572, 1611020, 1799465, 3598930, 7197860, 39228337, 78456674, 156913348, 196141685, 392283370, 784566740]

約数ペア:

[(1, 784566740), (2, 392283370), (4, 196141685), (5, 156913348), (10, 78456674), (20, 39228337), (109, 7197860), (218, 3598930), (436, 1799465), (487, 1611020), (545, 1439572), (739, 1061660), (974, 805510), (1090, 719786), (1478, 530830), (1948, 402755), (2180, 359893), (2435, 322204), (2956, 265415), (3695, 212332), (4870, 161102), (7390, 106166), (9740, 80551), (14780, 53083)]