20408864

素因数分解:

$2^5\times 7^1\times {\mathrm{179}}^1\times {\mathrm{509}}^1$

素因数の和:705

約数の個数: 48

約数和(自身を含む): 46267200

約数和(自身を除く): 25858336

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 112, 179, 224, 358, 509, 716, 1018, 1253, 1432, 2036, 2506, 2864, 3563, 4072, 5012, 5728, 7126, 8144, 10024, 14252, 16288, 20048, 28504, 40096, 57008, 91111, 114016, 182222, 364444, 637777, 728888, 1275554, 1457776, 2551108, 2915552, 5102216, 10204432, 20408864]

約数ペア:

[(1, 20408864), (2, 10204432), (4, 5102216), (7, 2915552), (8, 2551108), (14, 1457776), (16, 1275554), (28, 728888), (32, 637777), (56, 364444), (112, 182222), (179, 114016), (224, 91111), (358, 57008), (509, 40096), (716, 28504), (1018, 20048), (1253, 16288), (1432, 14252), (2036, 10024), (2506, 8144), (2864, 7126), (3563, 5728), (4072, 5012)]