21014019

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{137}}^1$

素因数の和:201

約数の個数: 64

約数和(自身を含む): 37094400

約数和(自身を除く): 16080381

約数列:

[1, 3, 9, 13, 19, 23, 27, 39, 57, 69, 117, 137, 171, 207, 247, 299, 351, 411, 437, 513, 621, 741, 897, 1233, 1311, 1781, 2223, 2603, 2691, 3151, 3699, 3933, 5343, 5681, 6669, 7809, 8073, 9453, 11799, 16029, 17043, 23427, 28359, 33839, 40963, 48087, 51129, 59869, 70281, 85077, 101517, 122889, 153387, 179607, 304551, 368667, 538821, 778297, 913653, 1106001, 1616463, 2334891, 7004673, 21014019]

約数ペア:

[(1, 21014019), (3, 7004673), (9, 2334891), (13, 1616463), (19, 1106001), (23, 913653), (27, 778297), (39, 538821), (57, 368667), (69, 304551), (117, 179607), (137, 153387), (171, 122889), (207, 101517), (247, 85077), (299, 70281), (351, 59869), (411, 51129), (437, 48087), (513, 40963), (621, 33839), (741, 28359), (897, 23427), (1233, 17043), (1311, 16029), (1781, 11799), (2223, 9453), (2603, 8073), (2691, 7809), (3151, 6669), (3699, 5681), (3933, 5343)]