21078900

素因数分解:

$2^2\times 3^3\times 5^2\times {\mathrm{37}}^1\times {\mathrm{211}}^1$

素因数の和:271

約数の個数: 144

約数和(自身を含む): 69926080

約数和(自身を除く): 48847180

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 25, 27, 30, 36, 37, 45, 50, 54, 60, 74, 75, 90, 100, 108, 111, 135, 148, 150, 180, 185, 211, 222, 225, 270, 300, 333, 370, 422, 444, 450, 540, 555, 633, 666, 675, 740, 844, 900, 925, 999, 1055, 1110, 1266, 1332, 1350, 1665, 1850, 1899, 1998, 2110, 2220, 2532, 2700, 2775, 3165, 3330, 3700, 3798, 3996, 4220, 4995, 5275, 5550, 5697, 6330, 6660, 7596, 7807, 8325, 9495, 9990, 10550, 11100, 11394, 12660, 15614, 15825, 16650, 18990, 19980, 21100, 22788, 23421, 24975, 28485, 31228, 31650, 33300, 37980, 39035, 46842, 47475, 49950, 56970, 63300, 70263, 78070, 93684, 94950, 99900, 113940, 117105, 140526, 142425, 156140, 189900, 195175, 210789, 234210, 281052, 284850, 351315, 390350, 421578, 468420, 569700, 585525, 702630, 780700, 843156, 1053945, 1171050, 1405260, 1756575, 2107890, 2342100, 3513150, 4215780, 5269725, 7026300, 10539450, 21078900]

約数ペア:

[(1, 21078900), (2, 10539450), (3, 7026300), (4, 5269725), (5, 4215780), (6, 3513150), (9, 2342100), (10, 2107890), (12, 1756575), (15, 1405260), (18, 1171050), (20, 1053945), (25, 843156), (27, 780700), (30, 702630), (36, 585525), (37, 569700), (45, 468420), (50, 421578), (54, 390350), (60, 351315), (74, 284850), (75, 281052), (90, 234210), (100, 210789), (108, 195175), (111, 189900), (135, 156140), (148, 142425), (150, 140526), (180, 117105), (185, 113940), (211, 99900), (222, 94950), (225, 93684), (270, 78070), (300, 70263), (333, 63300), (370, 56970), (422, 49950), (444, 47475), (450, 46842), (540, 39035), (555, 37980), (633, 33300), (666, 31650), (675, 31228), (740, 28485), (844, 24975), (900, 23421), (925, 22788), (999, 21100), (1055, 19980), (1110, 18990), (1266, 16650), (1332, 15825), (1350, 15614), (1665, 12660), (1850, 11394), (1899, 11100), (1998, 10550), (2110, 9990), (2220, 9495), (2532, 8325), (2700, 7807), (2775, 7596), (3165, 6660), (3330, 6330), (3700, 5697), (3798, 5550), (3996, 5275), (4220, 4995)]