80728137

素因数分解:

$3^3\times 7^3\times {\mathrm{23}}^1\times {\mathrm{379}}^1$

素因数の和:432

約数の個数: 64

約数和(自身を含む): 145920000

約数和(自身を除く): 65191863

約数列:

[1, 3, 7, 9, 21, 23, 27, 49, 63, 69, 147, 161, 189, 207, 343, 379, 441, 483, 621, 1029, 1127, 1137, 1323, 1449, 2653, 3087, 3381, 3411, 4347, 7889, 7959, 8717, 9261, 10143, 10233, 18571, 23667, 23877, 26151, 30429, 55713, 61019, 71001, 71631, 78453, 129997, 167139, 183057, 213003, 235359, 389991, 427133, 501417, 549171, 1169973, 1281399, 1647513, 2989931, 3509919, 3844197, 8969793, 11532591, 26909379, 80728137]

約数ペア:

[(1, 80728137), (3, 26909379), (7, 11532591), (9, 8969793), (21, 3844197), (23, 3509919), (27, 2989931), (49, 1647513), (63, 1281399), (69, 1169973), (147, 549171), (161, 501417), (189, 427133), (207, 389991), (343, 235359), (379, 213003), (441, 183057), (483, 167139), (621, 129997), (1029, 78453), (1127, 71631), (1137, 71001), (1323, 61019), (1449, 55713), (2653, 30429), (3087, 26151), (3381, 23877), (3411, 23667), (4347, 18571), (7889, 10233), (7959, 10143), (8717, 9261)]