21356478

素因数分解:

$2^1\times 3^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{8297}}^1$

素因数の和:8329

約数の個数: 48

約数和(自身を含む): 54368496

約数和(自身を除く): 33012018

約数列:

[1, 2, 3, 6, 9, 11, 13, 18, 22, 26, 33, 39, 66, 78, 99, 117, 143, 198, 234, 286, 429, 858, 1287, 2574, 8297, 16594, 24891, 49782, 74673, 91267, 107861, 149346, 182534, 215722, 273801, 323583, 547602, 647166, 821403, 970749, 1186471, 1642806, 1941498, 2372942, 3559413, 7118826, 10678239, 21356478]

約数ペア:

[(1, 21356478), (2, 10678239), (3, 7118826), (6, 3559413), (9, 2372942), (11, 1941498), (13, 1642806), (18, 1186471), (22, 970749), (26, 821403), (33, 647166), (39, 547602), (66, 323583), (78, 273801), (99, 215722), (117, 182534), (143, 149346), (198, 107861), (234, 91267), (286, 74673), (429, 49782), (858, 24891), (1287, 16594), (2574, 8297)]