20860784

素因数分解:

$2^4\times 7^1\times {\mathrm{19}}^1\times {\mathrm{9803}}^1$

素因数の和:9837

約数の個数: 40

約数和(自身を含む): 48627840

約数和(自身を除く): 27767056

約数列:

[1, 2, 4, 7, 8, 14, 16, 19, 28, 38, 56, 76, 112, 133, 152, 266, 304, 532, 1064, 2128, 9803, 19606, 39212, 68621, 78424, 137242, 156848, 186257, 274484, 372514, 548968, 745028, 1097936, 1303799, 1490056, 2607598, 2980112, 5215196, 10430392, 20860784]

約数ペア:

[(1, 20860784), (2, 10430392), (4, 5215196), (7, 2980112), (8, 2607598), (14, 1490056), (16, 1303799), (19, 1097936), (28, 745028), (38, 548968), (56, 372514), (76, 274484), (112, 186257), (133, 156848), (152, 137242), (266, 78424), (304, 68621), (532, 39212), (1064, 19606), (2128, 9803)]