19898508

素因数分解:

$2^2\times 3^1\times 7^2\times {\mathrm{43}}^1\times {\mathrm{787}}^1$

素因数の和:851

約数の個数: 72

約数和(自身を含む): 55336512

約数和(自身を除く): 35438004

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 43, 49, 84, 86, 98, 129, 147, 172, 196, 258, 294, 301, 516, 588, 602, 787, 903, 1204, 1574, 1806, 2107, 2361, 3148, 3612, 4214, 4722, 5509, 6321, 8428, 9444, 11018, 12642, 16527, 22036, 25284, 33054, 33841, 38563, 66108, 67682, 77126, 101523, 115689, 135364, 154252, 203046, 231378, 236887, 406092, 462756, 473774, 710661, 947548, 1421322, 1658209, 2842644, 3316418, 4974627, 6632836, 9949254, 19898508]

約数ペア:

[(1, 19898508), (2, 9949254), (3, 6632836), (4, 4974627), (6, 3316418), (7, 2842644), (12, 1658209), (14, 1421322), (21, 947548), (28, 710661), (42, 473774), (43, 462756), (49, 406092), (84, 236887), (86, 231378), (98, 203046), (129, 154252), (147, 135364), (172, 115689), (196, 101523), (258, 77126), (294, 67682), (301, 66108), (516, 38563), (588, 33841), (602, 33054), (787, 25284), (903, 22036), (1204, 16527), (1574, 12642), (1806, 11018), (2107, 9444), (2361, 8428), (3148, 6321), (3612, 5509), (4214, 4722)]