21519828

素因数分解:

$2^2\times 3^2\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{1753}}^1$

素因数の和:1805

約数の個数: 72

約数和(自身を含む): 61291776

約数和(自身を除く): 39771948

約数列:

[1, 2, 3, 4, 6, 9, 11, 12, 18, 22, 31, 33, 36, 44, 62, 66, 93, 99, 124, 132, 186, 198, 279, 341, 372, 396, 558, 682, 1023, 1116, 1364, 1753, 2046, 3069, 3506, 4092, 5259, 6138, 7012, 10518, 12276, 15777, 19283, 21036, 31554, 38566, 54343, 57849, 63108, 77132, 108686, 115698, 163029, 173547, 217372, 231396, 326058, 347094, 489087, 597773, 652116, 694188, 978174, 1195546, 1793319, 1956348, 2391092, 3586638, 5379957, 7173276, 10759914, 21519828]

約数ペア:

[(1, 21519828), (2, 10759914), (3, 7173276), (4, 5379957), (6, 3586638), (9, 2391092), (11, 1956348), (12, 1793319), (18, 1195546), (22, 978174), (31, 694188), (33, 652116), (36, 597773), (44, 489087), (62, 347094), (66, 326058), (93, 231396), (99, 217372), (124, 173547), (132, 163029), (186, 115698), (198, 108686), (279, 77132), (341, 63108), (372, 57849), (396, 54343), (558, 38566), (682, 31554), (1023, 21036), (1116, 19283), (1364, 15777), (1753, 12276), (2046, 10518), (3069, 7012), (3506, 6138), (4092, 5259)]