21438120

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{109}}^1\times {\mathrm{149}}^1$

素因数の和:283

約数の個数: 128

約数和(自身を含む): 71280000

約数和(自身を除く): 49841880

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 20, 22, 24, 30, 33, 40, 44, 55, 60, 66, 88, 109, 110, 120, 132, 149, 165, 218, 220, 264, 298, 327, 330, 436, 440, 447, 545, 596, 654, 660, 745, 872, 894, 1090, 1192, 1199, 1308, 1320, 1490, 1635, 1639, 1788, 2180, 2235, 2398, 2616, 2980, 3270, 3278, 3576, 3597, 4360, 4470, 4796, 4917, 5960, 5995, 6540, 6556, 7194, 8195, 8940, 9592, 9834, 11990, 13080, 13112, 14388, 16241, 16390, 17880, 17985, 19668, 23980, 24585, 28776, 32482, 32780, 35970, 39336, 47960, 48723, 49170, 64964, 65560, 71940, 81205, 97446, 98340, 129928, 143880, 162410, 178651, 194892, 196680, 243615, 324820, 357302, 389784, 487230, 535953, 649640, 714604, 893255, 974460, 1071906, 1429208, 1786510, 1948920, 2143812, 2679765, 3573020, 4287624, 5359530, 7146040, 10719060, 21438120]

約数ペア:

[(1, 21438120), (2, 10719060), (3, 7146040), (4, 5359530), (5, 4287624), (6, 3573020), (8, 2679765), (10, 2143812), (11, 1948920), (12, 1786510), (15, 1429208), (20, 1071906), (22, 974460), (24, 893255), (30, 714604), (33, 649640), (40, 535953), (44, 487230), (55, 389784), (60, 357302), (66, 324820), (88, 243615), (109, 196680), (110, 194892), (120, 178651), (132, 162410), (149, 143880), (165, 129928), (218, 98340), (220, 97446), (264, 81205), (298, 71940), (327, 65560), (330, 64964), (436, 49170), (440, 48723), (447, 47960), (545, 39336), (596, 35970), (654, 32780), (660, 32482), (745, 28776), (872, 24585), (894, 23980), (1090, 19668), (1192, 17985), (1199, 17880), (1308, 16390), (1320, 16241), (1490, 14388), (1635, 13112), (1639, 13080), (1788, 11990), (2180, 9834), (2235, 9592), (2398, 8940), (2616, 8195), (2980, 7194), (3270, 6556), (3278, 6540), (3576, 5995), (3597, 5960), (4360, 4917), (4470, 4796)]