21000681200

素因数分解:

$2^4\times 5^2\times {\mathrm{109}}^1\times {\mathrm{481667}}^1$

素因数の和:481794

約数の個数: 60

約数和(自身を含む): 50917124280

約数和(自身を除く): 29916443080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 109, 200, 218, 400, 436, 545, 872, 1090, 1744, 2180, 2725, 4360, 5450, 8720, 10900, 21800, 43600, 481667, 963334, 1926668, 2408335, 3853336, 4816670, 7706672, 9633340, 12041675, 19266680, 24083350, 38533360, 48166700, 52501703, 96333400, 105003406, 192666800, 210006812, 262508515, 420013624, 525017030, 840027248, 1050034060, 1312542575, 2100068120, 2625085150, 4200136240, 5250170300, 10500340600, 21000681200]

約数ペア:

[(1, 21000681200), (2, 10500340600), (4, 5250170300), (5, 4200136240), (8, 2625085150), (10, 2100068120), (16, 1312542575), (20, 1050034060), (25, 840027248), (40, 525017030), (50, 420013624), (80, 262508515), (100, 210006812), (109, 192666800), (200, 105003406), (218, 96333400), (400, 52501703), (436, 48166700), (545, 38533360), (872, 24083350), (1090, 19266680), (1744, 12041675), (2180, 9633340), (2725, 7706672), (4360, 4816670), (5450, 3853336), (8720, 2408335), (10900, 1926668), (21800, 963334), (43600, 481667)]