21804240

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{47}}^1\times {\mathrm{1933}}^1$

素因数の和:1996

約数の個数: 80

約数和(自身を含む): 69067008

約数和(自身を除く): 47262768

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 47, 48, 60, 80, 94, 120, 141, 188, 235, 240, 282, 376, 470, 564, 705, 752, 940, 1128, 1410, 1880, 1933, 2256, 2820, 3760, 3866, 5640, 5799, 7732, 9665, 11280, 11598, 15464, 19330, 23196, 28995, 30928, 38660, 46392, 57990, 77320, 90851, 92784, 115980, 154640, 181702, 231960, 272553, 363404, 454255, 463920, 545106, 726808, 908510, 1090212, 1362765, 1453616, 1817020, 2180424, 2725530, 3634040, 4360848, 5451060, 7268080, 10902120, 21804240]

約数ペア:

[(1, 21804240), (2, 10902120), (3, 7268080), (4, 5451060), (5, 4360848), (6, 3634040), (8, 2725530), (10, 2180424), (12, 1817020), (15, 1453616), (16, 1362765), (20, 1090212), (24, 908510), (30, 726808), (40, 545106), (47, 463920), (48, 454255), (60, 363404), (80, 272553), (94, 231960), (120, 181702), (141, 154640), (188, 115980), (235, 92784), (240, 90851), (282, 77320), (376, 57990), (470, 46392), (564, 38660), (705, 30928), (752, 28995), (940, 23196), (1128, 19330), (1410, 15464), (1880, 11598), (1933, 11280), (2256, 9665), (2820, 7732), (3760, 5799), (3866, 5640)]