18504801

素因数分解:

$3^3\times 7^2\times {\mathrm{71}}^1\times {\mathrm{197}}^1$

素因数の和:291

約数の個数: 48

約数和(自身を含む): 32503680

約数和(自身を除く): 13998879

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 71, 147, 189, 197, 213, 441, 497, 591, 639, 1323, 1379, 1491, 1773, 1917, 3479, 4137, 4473, 5319, 9653, 10437, 12411, 13419, 13987, 28959, 31311, 37233, 41961, 86877, 93933, 97909, 125883, 260631, 293727, 377649, 685363, 881181, 2056089, 2643543, 6168267, 18504801]

約数ペア:

[(1, 18504801), (3, 6168267), (7, 2643543), (9, 2056089), (21, 881181), (27, 685363), (49, 377649), (63, 293727), (71, 260631), (147, 125883), (189, 97909), (197, 93933), (213, 86877), (441, 41961), (497, 37233), (591, 31311), (639, 28959), (1323, 13987), (1379, 13419), (1491, 12411), (1773, 10437), (1917, 9653), (3479, 5319), (4137, 4473)]