18641007

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{727}}^1$

素因数の和:788

約数の個数: 48

約数和(自身を含む): 34524672

約数和(自身を除く): 15883665

約数列:

[1, 3, 7, 9, 11, 21, 33, 37, 63, 77, 99, 111, 231, 259, 333, 407, 693, 727, 777, 1221, 2181, 2331, 2849, 3663, 5089, 6543, 7997, 8547, 15267, 23991, 25641, 26899, 45801, 55979, 71973, 80697, 167937, 188293, 242091, 295889, 503811, 564879, 887667, 1694637, 2071223, 2663001, 6213669, 18641007]

約数ペア:

[(1, 18641007), (3, 6213669), (7, 2663001), (9, 2071223), (11, 1694637), (21, 887667), (33, 564879), (37, 503811), (63, 295889), (77, 242091), (99, 188293), (111, 167937), (231, 80697), (259, 71973), (333, 55979), (407, 45801), (693, 26899), (727, 25641), (777, 23991), (1221, 15267), (2181, 8547), (2331, 7997), (2849, 6543), (3663, 5089)]