21301956

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{1979}}^1$

素因数の和:2025

約数の個数: 72

約数和(自身を含む): 60540480

約数和(自身を除く): 39238524

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 23, 26, 36, 39, 46, 52, 69, 78, 92, 117, 138, 156, 207, 234, 276, 299, 414, 468, 598, 828, 897, 1196, 1794, 1979, 2691, 3588, 3958, 5382, 5937, 7916, 10764, 11874, 17811, 23748, 25727, 35622, 45517, 51454, 71244, 77181, 91034, 102908, 136551, 154362, 182068, 231543, 273102, 308724, 409653, 463086, 546204, 591721, 819306, 926172, 1183442, 1638612, 1775163, 2366884, 3550326, 5325489, 7100652, 10650978, 21301956]

約数ペア:

[(1, 21301956), (2, 10650978), (3, 7100652), (4, 5325489), (6, 3550326), (9, 2366884), (12, 1775163), (13, 1638612), (18, 1183442), (23, 926172), (26, 819306), (36, 591721), (39, 546204), (46, 463086), (52, 409653), (69, 308724), (78, 273102), (92, 231543), (117, 182068), (138, 154362), (156, 136551), (207, 102908), (234, 91034), (276, 77181), (299, 71244), (414, 51454), (468, 45517), (598, 35622), (828, 25727), (897, 23748), (1196, 17811), (1794, 11874), (1979, 10764), (2691, 7916), (3588, 5937), (3958, 5382)]