19754415

素因数分解:

$3^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{83}}^1$

素因数の和:181

約数の個数: 64

約数和(自身を含む): 37255680

約数和(自身を除く): 17501265

約数列:

[1, 3, 5, 9, 15, 27, 41, 43, 45, 83, 123, 129, 135, 205, 215, 249, 369, 387, 415, 615, 645, 747, 1107, 1161, 1245, 1763, 1845, 1935, 2241, 3403, 3569, 3735, 5289, 5535, 5805, 8815, 10209, 10707, 11205, 15867, 17015, 17845, 26445, 30627, 32121, 47601, 51045, 53535, 79335, 91881, 96363, 146329, 153135, 160605, 238005, 438987, 459405, 481815, 731645, 1316961, 2194935, 3950883, 6584805, 19754415]

約数ペア:

[(1, 19754415), (3, 6584805), (5, 3950883), (9, 2194935), (15, 1316961), (27, 731645), (41, 481815), (43, 459405), (45, 438987), (83, 238005), (123, 160605), (129, 153135), (135, 146329), (205, 96363), (215, 91881), (249, 79335), (369, 53535), (387, 51045), (415, 47601), (615, 32121), (645, 30627), (747, 26445), (1107, 17845), (1161, 17015), (1245, 15867), (1763, 11205), (1845, 10707), (1935, 10209), (2241, 8815), (3403, 5805), (3569, 5535), (3735, 5289)]