177648920

素因数分解:

$2^3\times 5^1\times {\mathrm{1973}}^1\times {\mathrm{2251}}^1$

素因数の和:4235

約数の個数: 32

約数和(自身を含む): 400090320

約数和(自身を除く): 222441400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1973, 2251, 3946, 4502, 7892, 9004, 9865, 11255, 15784, 18008, 19730, 22510, 39460, 45020, 78920, 90040, 4441223, 8882446, 17764892, 22206115, 35529784, 44412230, 88824460, 177648920]

約数ペア:

[(1, 177648920), (2, 88824460), (4, 44412230), (5, 35529784), (8, 22206115), (10, 17764892), (20, 8882446), (40, 4441223), (1973, 90040), (2251, 78920), (3946, 45020), (4502, 39460), (7892, 22510), (9004, 19730), (9865, 18008), (11255, 15784)]