21136456

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{181}}^1\times {\mathrm{1327}}^1$

素因数の和:1525

約数の個数: 32

約数和(自身を含む): 43505280

約数和(自身を除く): 22368824

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 181, 362, 724, 1327, 1448, 1991, 2654, 3982, 5308, 7964, 10616, 14597, 15928, 29194, 58388, 116776, 240187, 480374, 960748, 1921496, 2642057, 5284114, 10568228, 21136456]

約数ペア:

[(1, 21136456), (2, 10568228), (4, 5284114), (8, 2642057), (11, 1921496), (22, 960748), (44, 480374), (88, 240187), (181, 116776), (362, 58388), (724, 29194), (1327, 15928), (1448, 14597), (1991, 10616), (2654, 7964), (3982, 5308)]