21864579

素因数分解:

$3^1\times {\mathrm{11}}^2\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{67}}^1$

素因数の和:152

約数の個数: 48

約数和(自身を含む): 34728960

約数和(自身を除く): 12864381

約数列:

[1, 3, 11, 29, 31, 33, 67, 87, 93, 121, 201, 319, 341, 363, 737, 899, 957, 1023, 1943, 2077, 2211, 2697, 3509, 3751, 5829, 6231, 8107, 9889, 10527, 11253, 21373, 22847, 24321, 29667, 60233, 64119, 68541, 108779, 180699, 235103, 251317, 326337, 662563, 705309, 753951, 1987689, 7288193, 21864579]

約数ペア:

[(1, 21864579), (3, 7288193), (11, 1987689), (29, 753951), (31, 705309), (33, 662563), (67, 326337), (87, 251317), (93, 235103), (121, 180699), (201, 108779), (319, 68541), (341, 64119), (363, 60233), (737, 29667), (899, 24321), (957, 22847), (1023, 21373), (1943, 11253), (2077, 10527), (2211, 9889), (2697, 8107), (3509, 6231), (3751, 5829)]