19209771

素因数分解:

$3^3\times 7^1\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{67}}^1$

素因数の和:161

約数の個数: 64

約数和(自身を含む): 34728960

約数和(自身を除く): 15519189

約数列:

[1, 3, 7, 9, 21, 27, 37, 41, 63, 67, 111, 123, 189, 201, 259, 287, 333, 369, 469, 603, 777, 861, 999, 1107, 1407, 1517, 1809, 2331, 2479, 2583, 2747, 4221, 4551, 6993, 7437, 7749, 8241, 10619, 12663, 13653, 17353, 19229, 22311, 24723, 31857, 40959, 52059, 57687, 66933, 74169, 95571, 101639, 156177, 173061, 286713, 304917, 468531, 519183, 711473, 914751, 2134419, 2744253, 6403257, 19209771]

約数ペア:

[(1, 19209771), (3, 6403257), (7, 2744253), (9, 2134419), (21, 914751), (27, 711473), (37, 519183), (41, 468531), (63, 304917), (67, 286713), (111, 173061), (123, 156177), (189, 101639), (201, 95571), (259, 74169), (287, 66933), (333, 57687), (369, 52059), (469, 40959), (603, 31857), (777, 24723), (861, 22311), (999, 19229), (1107, 17353), (1407, 13653), (1517, 12663), (1809, 10619), (2331, 8241), (2479, 7749), (2583, 7437), (2747, 6993), (4221, 4551)]