31520013

素因数分解:

$3^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{73}}^1\times {\mathrm{709}}^1$

素因数の和:821

約数の個数: 32

約数和(自身を含む): 50438400

約数和(自身を除く): 18918387

約数列:

[1, 3, 7, 21, 29, 73, 87, 203, 219, 511, 609, 709, 1533, 2117, 2127, 4963, 6351, 14819, 14889, 20561, 44457, 51757, 61683, 143927, 155271, 362299, 431781, 1086897, 1500953, 4502859, 10506671, 31520013]

約数ペア:

[(1, 31520013), (3, 10506671), (7, 4502859), (21, 1500953), (29, 1086897), (73, 431781), (87, 362299), (203, 155271), (219, 143927), (511, 61683), (609, 51757), (709, 44457), (1533, 20561), (2117, 14889), (2127, 14819), (4963, 6351)]