20440048

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{947}}^1$

素因数の和:1045

約数の個数: 40

約数和(自身を含む): 42318720

約数和(自身を除く): 21878672

約数列:

[1, 2, 4, 8, 16, 19, 38, 71, 76, 142, 152, 284, 304, 568, 947, 1136, 1349, 1894, 2698, 3788, 5396, 7576, 10792, 15152, 17993, 21584, 35986, 67237, 71972, 134474, 143944, 268948, 287888, 537896, 1075792, 1277503, 2555006, 5110012, 10220024, 20440048]

約数ペア:

[(1, 20440048), (2, 10220024), (4, 5110012), (8, 2555006), (16, 1277503), (19, 1075792), (38, 537896), (71, 287888), (76, 268948), (142, 143944), (152, 134474), (284, 71972), (304, 67237), (568, 35986), (947, 21584), (1136, 17993), (1349, 15152), (1894, 10792), (2698, 7576), (3788, 5396)]