21485828

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{881}}^1$

素因数の和:972

約数の個数: 48

約数和(自身を含む): 47021184

約数和(自身を除く): 25535356

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 52, 67, 91, 134, 182, 268, 364, 469, 871, 881, 938, 1742, 1762, 1876, 3484, 3524, 6097, 6167, 11453, 12194, 12334, 22906, 24388, 24668, 45812, 59027, 80171, 118054, 160342, 236108, 320684, 413189, 767351, 826378, 1534702, 1652756, 3069404, 5371457, 10742914, 21485828]

約数ペア:

[(1, 21485828), (2, 10742914), (4, 5371457), (7, 3069404), (13, 1652756), (14, 1534702), (26, 826378), (28, 767351), (52, 413189), (67, 320684), (91, 236108), (134, 160342), (182, 118054), (268, 80171), (364, 59027), (469, 45812), (871, 24668), (881, 24388), (938, 22906), (1742, 12334), (1762, 12194), (1876, 11453), (3484, 6167), (3524, 6097)]