397367901

素因数分解:

$3^2\times 7^5\times {\mathrm{37}}^1\times {\mathrm{71}}^1$

素因数の和:149

約数の個数: 72

約数和(自身を含む): 697417344

約数和(自身を除く): 300049443

約数列:

[1, 3, 7, 9, 21, 37, 49, 63, 71, 111, 147, 213, 259, 333, 343, 441, 497, 639, 777, 1029, 1491, 1813, 2331, 2401, 2627, 3087, 3479, 4473, 5439, 7203, 7881, 10437, 12691, 16317, 16807, 18389, 21609, 23643, 24353, 31311, 38073, 50421, 55167, 73059, 88837, 114219, 128723, 151263, 165501, 170471, 219177, 266511, 386169, 511413, 621859, 799533, 901061, 1158507, 1193297, 1534239, 1865577, 2703183, 3579891, 5596731, 6307427, 8109549, 10739673, 18922281, 44151989, 56766843, 132455967, 397367901]

約数ペア:

[(1, 397367901), (3, 132455967), (7, 56766843), (9, 44151989), (21, 18922281), (37, 10739673), (49, 8109549), (63, 6307427), (71, 5596731), (111, 3579891), (147, 2703183), (213, 1865577), (259, 1534239), (333, 1193297), (343, 1158507), (441, 901061), (497, 799533), (639, 621859), (777, 511413), (1029, 386169), (1491, 266511), (1813, 219177), (2331, 170471), (2401, 165501), (2627, 151263), (3087, 128723), (3479, 114219), (4473, 88837), (5439, 73059), (7203, 55167), (7881, 50421), (10437, 38073), (12691, 31311), (16317, 24353), (16807, 23643), (18389, 21609)]