18863649

素因数分解:

$3^2\times 7^1\times {\mathrm{41}}^1\times {\mathrm{67}}^1\times {\mathrm{109}}^1$

素因数の和:230

約数の個数: 48

約数和(自身を含む): 32672640

約数和(自身を除く): 13808991

約数列:

[1, 3, 7, 9, 21, 41, 63, 67, 109, 123, 201, 287, 327, 369, 469, 603, 763, 861, 981, 1407, 2289, 2583, 2747, 4221, 4469, 6867, 7303, 8241, 13407, 19229, 21909, 24723, 31283, 40221, 51121, 57687, 65727, 93849, 153363, 173061, 281547, 299423, 460089, 898269, 2095961, 2694807, 6287883, 18863649]

約数ペア:

[(1, 18863649), (3, 6287883), (7, 2694807), (9, 2095961), (21, 898269), (41, 460089), (63, 299423), (67, 281547), (109, 173061), (123, 153363), (201, 93849), (287, 65727), (327, 57687), (369, 51121), (469, 40221), (603, 31283), (763, 24723), (861, 21909), (981, 19229), (1407, 13407), (2289, 8241), (2583, 7303), (2747, 6867), (4221, 4469)]