21356280

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{5393}}^1$

素因数の和:5421

約数の個数: 96

約数和(自身を含む): 75731760

約数和(自身を除く): 54375480

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 15, 18, 20, 22, 24, 30, 33, 36, 40, 44, 45, 55, 60, 66, 72, 88, 90, 99, 110, 120, 132, 165, 180, 198, 220, 264, 330, 360, 396, 440, 495, 660, 792, 990, 1320, 1980, 3960, 5393, 10786, 16179, 21572, 26965, 32358, 43144, 48537, 53930, 59323, 64716, 80895, 97074, 107860, 118646, 129432, 161790, 177969, 194148, 215720, 237292, 242685, 296615, 323580, 355938, 388296, 474584, 485370, 533907, 593230, 647160, 711876, 889845, 970740, 1067814, 1186460, 1423752, 1779690, 1941480, 2135628, 2372920, 2669535, 3559380, 4271256, 5339070, 7118760, 10678140, 21356280]

約数ペア:

[(1, 21356280), (2, 10678140), (3, 7118760), (4, 5339070), (5, 4271256), (6, 3559380), (8, 2669535), (9, 2372920), (10, 2135628), (11, 1941480), (12, 1779690), (15, 1423752), (18, 1186460), (20, 1067814), (22, 970740), (24, 889845), (30, 711876), (33, 647160), (36, 593230), (40, 533907), (44, 485370), (45, 474584), (55, 388296), (60, 355938), (66, 323580), (72, 296615), (88, 242685), (90, 237292), (99, 215720), (110, 194148), (120, 177969), (132, 161790), (165, 129432), (180, 118646), (198, 107860), (220, 97074), (264, 80895), (330, 64716), (360, 59323), (396, 53930), (440, 48537), (495, 43144), (660, 32358), (792, 26965), (990, 21572), (1320, 16179), (1980, 10786), (3960, 5393)]