18729326

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{173}}^1$

素因数の和:249

約数の個数: 64

約数和(自身を含む): 38085120

約数和(自身を除く): 19355794

約数列:

[1, 2, 7, 11, 14, 19, 22, 37, 38, 74, 77, 133, 154, 173, 209, 259, 266, 346, 407, 418, 518, 703, 814, 1211, 1406, 1463, 1903, 2422, 2849, 2926, 3287, 3806, 4921, 5698, 6401, 6574, 7733, 9842, 12802, 13321, 15466, 23009, 26642, 36157, 44807, 46018, 54131, 70411, 72314, 89614, 108262, 121619, 140822, 243238, 253099, 492877, 506198, 851333, 985754, 1337809, 1702666, 2675618, 9364663, 18729326]

約数ペア:

[(1, 18729326), (2, 9364663), (7, 2675618), (11, 1702666), (14, 1337809), (19, 985754), (22, 851333), (37, 506198), (38, 492877), (74, 253099), (77, 243238), (133, 140822), (154, 121619), (173, 108262), (209, 89614), (259, 72314), (266, 70411), (346, 54131), (407, 46018), (418, 44807), (518, 36157), (703, 26642), (814, 23009), (1211, 15466), (1406, 13321), (1463, 12802), (1903, 9842), (2422, 7733), (2849, 6574), (2926, 6401), (3287, 5698), (3806, 4921)]