21661444

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^2\times {\mathrm{2143}}^1$

素因数の和:2192

約数の個数: 36

約数和(自身を含む): 45744384

約数和(自身を除く): 24082940

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 76, 133, 266, 361, 532, 722, 1444, 2143, 2527, 4286, 5054, 8572, 10108, 15001, 30002, 40717, 60004, 81434, 162868, 285019, 570038, 773623, 1140076, 1547246, 3094492, 5415361, 10830722, 21661444]

約数ペア:

[(1, 21661444), (2, 10830722), (4, 5415361), (7, 3094492), (14, 1547246), (19, 1140076), (28, 773623), (38, 570038), (76, 285019), (133, 162868), (266, 81434), (361, 60004), (532, 40717), (722, 30002), (1444, 15001), (2143, 10108), (2527, 8572), (4286, 5054)]