19897856

素因数分解:

$2^9\times {\mathrm{11}}^1\times {\mathrm{3533}}^1$

素因数の和:3562

約数の個数: 40

約数和(自身を含む): 43383384

約数和(自身を除く): 23485528

約数列:

[1, 2, 4, 8, 11, 16, 22, 32, 44, 64, 88, 128, 176, 256, 352, 512, 704, 1408, 2816, 3533, 5632, 7066, 14132, 28264, 38863, 56528, 77726, 113056, 155452, 226112, 310904, 452224, 621808, 904448, 1243616, 1808896, 2487232, 4974464, 9948928, 19897856]

約数ペア:

[(1, 19897856), (2, 9948928), (4, 4974464), (8, 2487232), (11, 1808896), (16, 1243616), (22, 904448), (32, 621808), (44, 452224), (64, 310904), (88, 226112), (128, 155452), (176, 113056), (256, 77726), (352, 56528), (512, 38863), (704, 28264), (1408, 14132), (2816, 7066), (3533, 5632)]