21818300

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{71}}^1\times {\mathrm{439}}^1$

素因数の和:531

約数の個数: 72

約数和(自身を含む): 54996480

約数和(自身を除く): 33178180

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 50, 70, 71, 100, 140, 142, 175, 284, 350, 355, 439, 497, 700, 710, 878, 994, 1420, 1756, 1775, 1988, 2195, 2485, 3073, 3550, 4390, 4970, 6146, 7100, 8780, 9940, 10975, 12292, 12425, 15365, 21950, 24850, 30730, 31169, 43900, 49700, 61460, 62338, 76825, 124676, 153650, 155845, 218183, 307300, 311690, 436366, 623380, 779225, 872732, 1090915, 1558450, 2181830, 3116900, 4363660, 5454575, 10909150, 21818300]

約数ペア:

[(1, 21818300), (2, 10909150), (4, 5454575), (5, 4363660), (7, 3116900), (10, 2181830), (14, 1558450), (20, 1090915), (25, 872732), (28, 779225), (35, 623380), (50, 436366), (70, 311690), (71, 307300), (100, 218183), (140, 155845), (142, 153650), (175, 124676), (284, 76825), (350, 62338), (355, 61460), (439, 49700), (497, 43900), (700, 31169), (710, 30730), (878, 24850), (994, 21950), (1420, 15365), (1756, 12425), (1775, 12292), (1988, 10975), (2195, 9940), (2485, 8780), (3073, 7100), (3550, 6146), (4390, 4970)]