20556256

素因数分解:

$2^5\times 7^1\times {\mathrm{163}}^1\times {\mathrm{563}}^1$

素因数の和:743

約数の個数: 48

約数和(自身を含む): 46617984

約数和(自身を除く): 26061728

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 112, 163, 224, 326, 563, 652, 1126, 1141, 1304, 2252, 2282, 2608, 3941, 4504, 4564, 5216, 7882, 9008, 9128, 15764, 18016, 18256, 31528, 36512, 63056, 91769, 126112, 183538, 367076, 642383, 734152, 1284766, 1468304, 2569532, 2936608, 5139064, 10278128, 20556256]

約数ペア:

[(1, 20556256), (2, 10278128), (4, 5139064), (7, 2936608), (8, 2569532), (14, 1468304), (16, 1284766), (28, 734152), (32, 642383), (56, 367076), (112, 183538), (163, 126112), (224, 91769), (326, 63056), (563, 36512), (652, 31528), (1126, 18256), (1141, 18016), (1304, 15764), (2252, 9128), (2282, 9008), (2608, 7882), (3941, 5216), (4504, 4564)]