90975760

素因数分解:

$2^4\times 5^1\times {\mathrm{109}}^1\times {\mathrm{10433}}^1$

素因数の和:10555

約数の個数: 40

約数和(自身を含む): 213479640

約数和(自身を除く): 122503880

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 109, 218, 436, 545, 872, 1090, 1744, 2180, 4360, 8720, 10433, 20866, 41732, 52165, 83464, 104330, 166928, 208660, 417320, 834640, 1137197, 2274394, 4548788, 5685985, 9097576, 11371970, 18195152, 22743940, 45487880, 90975760]

約数ペア:

[(1, 90975760), (2, 45487880), (4, 22743940), (5, 18195152), (8, 11371970), (10, 9097576), (16, 5685985), (20, 4548788), (40, 2274394), (80, 1137197), (109, 834640), (218, 417320), (436, 208660), (545, 166928), (872, 104330), (1090, 83464), (1744, 52165), (2180, 41732), (4360, 20866), (8720, 10433)]