861616

素因数分解:

$2^4\times 7^3\times {\mathrm{157}}^1$

素因数の和:186

約数の個数: 40

約数和(自身を含む): 1959200

約数和(自身を除く): 1097584

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 49, 56, 98, 112, 157, 196, 314, 343, 392, 628, 686, 784, 1099, 1256, 1372, 2198, 2512, 2744, 4396, 5488, 7693, 8792, 15386, 17584, 30772, 53851, 61544, 107702, 123088, 215404, 430808, 861616]

約数ペア:

[(1, 861616), (2, 430808), (4, 215404), (7, 123088), (8, 107702), (14, 61544), (16, 53851), (28, 30772), (49, 17584), (56, 15386), (98, 8792), (112, 7693), (157, 5488), (196, 4396), (314, 2744), (343, 2512), (392, 2198), (628, 1372), (686, 1256), (784, 1099)]