27989871

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{163}}^1$

素因数の和:240

約数の個数: 64

約数和(自身を含む): 50254848

約数和(自身を除く): 22264977

約数列:

[1, 3, 7, 13, 17, 21, 37, 39, 51, 91, 111, 119, 163, 221, 259, 273, 357, 481, 489, 629, 663, 777, 1141, 1443, 1547, 1887, 2119, 2771, 3367, 3423, 4403, 4641, 6031, 6357, 8177, 8313, 10101, 13209, 14833, 18093, 19397, 24531, 36023, 42217, 44499, 57239, 58191, 78403, 102527, 108069, 126651, 171717, 235209, 252161, 307581, 548821, 717689, 756483, 1332851, 1646463, 2153067, 3998553, 9329957, 27989871]

約数ペア:

[(1, 27989871), (3, 9329957), (7, 3998553), (13, 2153067), (17, 1646463), (21, 1332851), (37, 756483), (39, 717689), (51, 548821), (91, 307581), (111, 252161), (119, 235209), (163, 171717), (221, 126651), (259, 108069), (273, 102527), (357, 78403), (481, 58191), (489, 57239), (629, 44499), (663, 42217), (777, 36023), (1141, 24531), (1443, 19397), (1547, 18093), (1887, 14833), (2119, 13209), (2771, 10101), (3367, 8313), (3423, 8177), (4403, 6357), (4641, 6031)]