21226568

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{31}}^2\times {\mathrm{251}}^1$

素因数の和:330

約数の個数: 48

約数和(自身を含む): 45042480

約数和(自身を除く): 23815912

約数列:

[1, 2, 4, 8, 11, 22, 31, 44, 62, 88, 124, 248, 251, 341, 502, 682, 961, 1004, 1364, 1922, 2008, 2728, 2761, 3844, 5522, 7688, 7781, 10571, 11044, 15562, 21142, 22088, 31124, 42284, 62248, 84568, 85591, 171182, 241211, 342364, 482422, 684728, 964844, 1929688, 2653321, 5306642, 10613284, 21226568]

約数ペア:

[(1, 21226568), (2, 10613284), (4, 5306642), (8, 2653321), (11, 1929688), (22, 964844), (31, 684728), (44, 482422), (62, 342364), (88, 241211), (124, 171182), (248, 85591), (251, 84568), (341, 62248), (502, 42284), (682, 31124), (961, 22088), (1004, 21142), (1364, 15562), (1922, 11044), (2008, 10571), (2728, 7781), (2761, 7688), (3844, 5522)]