21813960

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{25969}}^1$

素因数の和:25990

約数の個数: 64

約数和(自身を含む): 74793600

約数和(自身を除く): 52979640

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 840, 25969, 51938, 77907, 103876, 129845, 155814, 181783, 207752, 259690, 311628, 363566, 389535, 519380, 545349, 623256, 727132, 779070, 908915, 1038760, 1090698, 1454264, 1558140, 1817830, 2181396, 2726745, 3116280, 3635660, 4362792, 5453490, 7271320, 10906980, 21813960]

約数ペア:

[(1, 21813960), (2, 10906980), (3, 7271320), (4, 5453490), (5, 4362792), (6, 3635660), (7, 3116280), (8, 2726745), (10, 2181396), (12, 1817830), (14, 1558140), (15, 1454264), (20, 1090698), (21, 1038760), (24, 908915), (28, 779070), (30, 727132), (35, 623256), (40, 545349), (42, 519380), (56, 389535), (60, 363566), (70, 311628), (84, 259690), (105, 207752), (120, 181783), (140, 155814), (168, 129845), (210, 103876), (280, 77907), (420, 51938), (840, 25969)]