18916818

素因数分解:

$2^1\times 3^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{227}}^1$

素因数の和:311

約数の個数: 64

約数和(自身を含む): 43338240

約数和(自身を除く): 24421422

約数列:

[1, 2, 3, 6, 17, 19, 34, 38, 43, 51, 57, 86, 102, 114, 129, 227, 258, 323, 454, 646, 681, 731, 817, 969, 1362, 1462, 1634, 1938, 2193, 2451, 3859, 4313, 4386, 4902, 7718, 8626, 9761, 11577, 12939, 13889, 19522, 23154, 25878, 27778, 29283, 41667, 58566, 73321, 83334, 146642, 165937, 185459, 219963, 331874, 370918, 439926, 497811, 556377, 995622, 1112754, 3152803, 6305606, 9458409, 18916818]

約数ペア:

[(1, 18916818), (2, 9458409), (3, 6305606), (6, 3152803), (17, 1112754), (19, 995622), (34, 556377), (38, 497811), (43, 439926), (51, 370918), (57, 331874), (86, 219963), (102, 185459), (114, 165937), (129, 146642), (227, 83334), (258, 73321), (323, 58566), (454, 41667), (646, 29283), (681, 27778), (731, 25878), (817, 23154), (969, 19522), (1362, 13889), (1462, 12939), (1634, 11577), (1938, 9761), (2193, 8626), (2451, 7718), (3859, 4902), (4313, 4386)]