18687716

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{61}}^1\times {\mathrm{139}}^1$

素因数の和:252

約数の個数: 48

約数和(自身を含む): 36456000

約数和(自身を除く): 17768284

約数列:

[1, 2, 4, 19, 29, 38, 58, 61, 76, 116, 122, 139, 244, 278, 551, 556, 1102, 1159, 1769, 2204, 2318, 2641, 3538, 4031, 4636, 5282, 7076, 8062, 8479, 10564, 16124, 16958, 33611, 33916, 67222, 76589, 134444, 153178, 161101, 245891, 306356, 322202, 491782, 644404, 983564, 4671929, 9343858, 18687716]

約数ペア:

[(1, 18687716), (2, 9343858), (4, 4671929), (19, 983564), (29, 644404), (38, 491782), (58, 322202), (61, 306356), (76, 245891), (116, 161101), (122, 153178), (139, 134444), (244, 76589), (278, 67222), (551, 33916), (556, 33611), (1102, 16958), (1159, 16124), (1769, 10564), (2204, 8479), (2318, 8062), (2641, 7076), (3538, 5282), (4031, 4636)]