21659248

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{1031}}^1$

素因数の和:1153

約数の個数: 40

約数和(自身を含む): 45684576

約数和(自身を除く): 24025328

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 101, 104, 202, 208, 404, 808, 1031, 1313, 1616, 2062, 2626, 4124, 5252, 8248, 10504, 13403, 16496, 21008, 26806, 53612, 104131, 107224, 208262, 214448, 416524, 833048, 1353703, 1666096, 2707406, 5414812, 10829624, 21659248]

約数ペア:

[(1, 21659248), (2, 10829624), (4, 5414812), (8, 2707406), (13, 1666096), (16, 1353703), (26, 833048), (52, 416524), (101, 214448), (104, 208262), (202, 107224), (208, 104131), (404, 53612), (808, 26806), (1031, 21008), (1313, 16496), (1616, 13403), (2062, 10504), (2626, 8248), (4124, 5252)]