21802689

素因数分解:

$3^5\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{83}}^1$

素因数の和:168

約数の個数: 48

約数和(自身を含む): 35223552

約数和(自身を除く): 13420863

約数列:

[1, 3, 9, 23, 27, 47, 69, 81, 83, 141, 207, 243, 249, 423, 621, 747, 1081, 1269, 1863, 1909, 2241, 3243, 3807, 3901, 5589, 5727, 6723, 9729, 11421, 11703, 17181, 20169, 29187, 35109, 51543, 87561, 89723, 105327, 154629, 262683, 269169, 315981, 463887, 807507, 947943, 2422521, 7267563, 21802689]

約数ペア:

[(1, 21802689), (3, 7267563), (9, 2422521), (23, 947943), (27, 807507), (47, 463887), (69, 315981), (81, 269169), (83, 262683), (141, 154629), (207, 105327), (243, 89723), (249, 87561), (423, 51543), (621, 35109), (747, 29187), (1081, 20169), (1269, 17181), (1863, 11703), (1909, 11421), (2241, 9729), (3243, 6723), (3807, 5727), (3901, 5589)]