19245040

素因数分解:

$2^4\times 5^1\times {\mathrm{109}}^1\times {\mathrm{2207}}^1$

素因数の和:2329

約数の個数: 40

約数和(自身を含む): 45175680

約数和(自身を除く): 25930640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 109, 218, 436, 545, 872, 1090, 1744, 2180, 2207, 4360, 4414, 8720, 8828, 11035, 17656, 22070, 35312, 44140, 88280, 176560, 240563, 481126, 962252, 1202815, 1924504, 2405630, 3849008, 4811260, 9622520, 19245040]

約数ペア:

[(1, 19245040), (2, 9622520), (4, 4811260), (5, 3849008), (8, 2405630), (10, 1924504), (16, 1202815), (20, 962252), (40, 481126), (80, 240563), (109, 176560), (218, 88280), (436, 44140), (545, 35312), (872, 22070), (1090, 17656), (1744, 11035), (2180, 8828), (2207, 8720), (4360, 4414)]