18706317

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{173}}^1\times {\mathrm{271}}^1$

素因数の和:473

約数の個数: 32

約数和(自身を含む): 30289920

約数和(自身を除く): 11583603

約数列:

[1, 3, 7, 19, 21, 57, 133, 173, 271, 399, 519, 813, 1211, 1897, 3287, 3633, 5149, 5691, 9861, 15447, 23009, 36043, 46883, 69027, 108129, 140649, 328181, 890777, 984543, 2672331, 6235439, 18706317]

約数ペア:

[(1, 18706317), (3, 6235439), (7, 2672331), (19, 984543), (21, 890777), (57, 328181), (133, 140649), (173, 108129), (271, 69027), (399, 46883), (519, 36043), (813, 23009), (1211, 15447), (1897, 9861), (3287, 5691), (3633, 5149)]