21710745

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{157}}^1\times {\mathrm{439}}^1$

素因数の和:614

約数の個数: 48

約数和(自身を含む): 43380480

約数和(自身を除く): 21669735

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 157, 315, 439, 471, 785, 1099, 1317, 1413, 2195, 2355, 3073, 3297, 3951, 5495, 6585, 7065, 9219, 9891, 15365, 16485, 19755, 27657, 46095, 49455, 68923, 138285, 206769, 344615, 482461, 620307, 1033845, 1447383, 2412305, 3101535, 4342149, 7236915, 21710745]

約数ペア:

[(1, 21710745), (3, 7236915), (5, 4342149), (7, 3101535), (9, 2412305), (15, 1447383), (21, 1033845), (35, 620307), (45, 482461), (63, 344615), (105, 206769), (157, 138285), (315, 68923), (439, 49455), (471, 46095), (785, 27657), (1099, 19755), (1317, 16485), (1413, 15365), (2195, 9891), (2355, 9219), (3073, 7065), (3297, 6585), (3951, 5495)]