19811778

素因数分解:

$2^1\times 3^1\times 7^2\times {\mathrm{79}}^1\times {\mathrm{853}}^1$

素因数の和:951

約数の個数: 48

約数和(自身を含む): 46730880

約数和(自身を除く): 26919102

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 49, 79, 98, 147, 158, 237, 294, 474, 553, 853, 1106, 1659, 1706, 2559, 3318, 3871, 5118, 5971, 7742, 11613, 11942, 17913, 23226, 35826, 41797, 67387, 83594, 125391, 134774, 202161, 250782, 404322, 471709, 943418, 1415127, 2830254, 3301963, 6603926, 9905889, 19811778]

約数ペア:

[(1, 19811778), (2, 9905889), (3, 6603926), (6, 3301963), (7, 2830254), (14, 1415127), (21, 943418), (42, 471709), (49, 404322), (79, 250782), (98, 202161), (147, 134774), (158, 125391), (237, 83594), (294, 67387), (474, 41797), (553, 35826), (853, 23226), (1106, 17913), (1659, 11942), (1706, 11613), (2559, 7742), (3318, 5971), (3871, 5118)]