21372978

素因数分解:

$2^1\times 3^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{443}}^1$

素因数の和:519

約数の個数: 64

約数和(自身を含む): 50637312

約数和(自身を除く): 29264334

約数列:

[1, 2, 3, 6, 11, 17, 22, 33, 34, 43, 51, 66, 86, 102, 129, 187, 258, 374, 443, 473, 561, 731, 886, 946, 1122, 1329, 1419, 1462, 2193, 2658, 2838, 4386, 4873, 7531, 8041, 9746, 14619, 15062, 16082, 19049, 22593, 24123, 29238, 38098, 45186, 48246, 57147, 82841, 114294, 165682, 209539, 248523, 323833, 419078, 497046, 628617, 647666, 971499, 1257234, 1942998, 3562163, 7124326, 10686489, 21372978]

約数ペア:

[(1, 21372978), (2, 10686489), (3, 7124326), (6, 3562163), (11, 1942998), (17, 1257234), (22, 971499), (33, 647666), (34, 628617), (43, 497046), (51, 419078), (66, 323833), (86, 248523), (102, 209539), (129, 165682), (187, 114294), (258, 82841), (374, 57147), (443, 48246), (473, 45186), (561, 38098), (731, 29238), (886, 24123), (946, 22593), (1122, 19049), (1329, 16082), (1419, 15062), (1462, 14619), (2193, 9746), (2658, 8041), (2838, 7531), (4386, 4873)]