20921400

素因数分解:

$2^3\times 3^2\times 5^2\times {\mathrm{59}}^1\times {\mathrm{197}}^1$

素因数の和:278

約数の個数: 144

約数和(自身を含む): 71814600

約数和(自身を除く): 50893200

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 25, 30, 36, 40, 45, 50, 59, 60, 72, 75, 90, 100, 118, 120, 150, 177, 180, 197, 200, 225, 236, 295, 300, 354, 360, 394, 450, 472, 531, 590, 591, 600, 708, 788, 885, 900, 985, 1062, 1180, 1182, 1416, 1475, 1576, 1770, 1773, 1800, 1970, 2124, 2360, 2364, 2655, 2950, 2955, 3540, 3546, 3940, 4248, 4425, 4728, 4925, 5310, 5900, 5910, 7080, 7092, 7880, 8850, 8865, 9850, 10620, 11623, 11800, 11820, 13275, 14184, 14775, 17700, 17730, 19700, 21240, 23246, 23640, 26550, 29550, 34869, 35400, 35460, 39400, 44325, 46492, 53100, 58115, 59100, 69738, 70920, 88650, 92984, 104607, 106200, 116230, 118200, 139476, 174345, 177300, 209214, 232460, 278952, 290575, 348690, 354600, 418428, 464920, 523035, 581150, 697380, 836856, 871725, 1046070, 1162300, 1394760, 1743450, 2092140, 2324600, 2615175, 3486900, 4184280, 5230350, 6973800, 10460700, 20921400]

約数ペア:

[(1, 20921400), (2, 10460700), (3, 6973800), (4, 5230350), (5, 4184280), (6, 3486900), (8, 2615175), (9, 2324600), (10, 2092140), (12, 1743450), (15, 1394760), (18, 1162300), (20, 1046070), (24, 871725), (25, 836856), (30, 697380), (36, 581150), (40, 523035), (45, 464920), (50, 418428), (59, 354600), (60, 348690), (72, 290575), (75, 278952), (90, 232460), (100, 209214), (118, 177300), (120, 174345), (150, 139476), (177, 118200), (180, 116230), (197, 106200), (200, 104607), (225, 92984), (236, 88650), (295, 70920), (300, 69738), (354, 59100), (360, 58115), (394, 53100), (450, 46492), (472, 44325), (531, 39400), (590, 35460), (591, 35400), (600, 34869), (708, 29550), (788, 26550), (885, 23640), (900, 23246), (985, 21240), (1062, 19700), (1180, 17730), (1182, 17700), (1416, 14775), (1475, 14184), (1576, 13275), (1770, 11820), (1773, 11800), (1800, 11623), (1970, 10620), (2124, 9850), (2360, 8865), (2364, 8850), (2655, 7880), (2950, 7092), (2955, 7080), (3540, 5910), (3546, 5900), (3940, 5310), (4248, 4925), (4425, 4728)]