21305520

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{127}}^1\times {\mathrm{233}}^1$

素因数の和:379

約数の個数: 120

約数和(自身を含む): 72423936

約数和(自身を除く): 51118416

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 120, 127, 144, 180, 233, 240, 254, 360, 381, 466, 508, 635, 699, 720, 762, 932, 1016, 1143, 1165, 1270, 1398, 1524, 1864, 1905, 2032, 2097, 2286, 2330, 2540, 2796, 3048, 3495, 3728, 3810, 4194, 4572, 4660, 5080, 5592, 5715, 6096, 6990, 7620, 8388, 9144, 9320, 10160, 10485, 11184, 11430, 13980, 15240, 16776, 18288, 18640, 20970, 22860, 27960, 29591, 30480, 33552, 41940, 45720, 55920, 59182, 83880, 88773, 91440, 118364, 147955, 167760, 177546, 236728, 266319, 295910, 355092, 443865, 473456, 532638, 591820, 710184, 887730, 1065276, 1183640, 1331595, 1420368, 1775460, 2130552, 2367280, 2663190, 3550920, 4261104, 5326380, 7101840, 10652760, 21305520]

約数ペア:

[(1, 21305520), (2, 10652760), (3, 7101840), (4, 5326380), (5, 4261104), (6, 3550920), (8, 2663190), (9, 2367280), (10, 2130552), (12, 1775460), (15, 1420368), (16, 1331595), (18, 1183640), (20, 1065276), (24, 887730), (30, 710184), (36, 591820), (40, 532638), (45, 473456), (48, 443865), (60, 355092), (72, 295910), (80, 266319), (90, 236728), (120, 177546), (127, 167760), (144, 147955), (180, 118364), (233, 91440), (240, 88773), (254, 83880), (360, 59182), (381, 55920), (466, 45720), (508, 41940), (635, 33552), (699, 30480), (720, 29591), (762, 27960), (932, 22860), (1016, 20970), (1143, 18640), (1165, 18288), (1270, 16776), (1398, 15240), (1524, 13980), (1864, 11430), (1905, 11184), (2032, 10485), (2097, 10160), (2286, 9320), (2330, 9144), (2540, 8388), (2796, 7620), (3048, 6990), (3495, 6096), (3728, 5715), (3810, 5592), (4194, 5080), (4572, 4660)]