21020600

素因数分解:

$2^3\times 5^2\times {\mathrm{61}}^1\times {\mathrm{1723}}^1$

素因数の和:1800

約数の個数: 48

約数和(自身を含む): 49702920

約数和(自身を除く): 28682320

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 61, 100, 122, 200, 244, 305, 488, 610, 1220, 1525, 1723, 2440, 3050, 3446, 6100, 6892, 8615, 12200, 13784, 17230, 34460, 43075, 68920, 86150, 105103, 172300, 210206, 344600, 420412, 525515, 840824, 1051030, 2102060, 2627575, 4204120, 5255150, 10510300, 21020600]

約数ペア:

[(1, 21020600), (2, 10510300), (4, 5255150), (5, 4204120), (8, 2627575), (10, 2102060), (20, 1051030), (25, 840824), (40, 525515), (50, 420412), (61, 344600), (100, 210206), (122, 172300), (200, 105103), (244, 86150), (305, 68920), (488, 43075), (610, 34460), (1220, 17230), (1525, 13784), (1723, 12200), (2440, 8615), (3050, 6892), (3446, 6100)]