20488688

素因数分解:

$2^4\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{557}}^1$

素因数の和:606

約数の個数: 60

約数和(自身を含む): 46012680

約数和(自身を除く): 25523992

約数列:

[1, 2, 4, 8, 11, 16, 19, 22, 38, 44, 76, 88, 121, 152, 176, 209, 242, 304, 418, 484, 557, 836, 968, 1114, 1672, 1936, 2228, 2299, 3344, 4456, 4598, 6127, 8912, 9196, 10583, 12254, 18392, 21166, 24508, 36784, 42332, 49016, 67397, 84664, 98032, 116413, 134794, 169328, 232826, 269588, 465652, 539176, 931304, 1078352, 1280543, 1862608, 2561086, 5122172, 10244344, 20488688]

約数ペア:

[(1, 20488688), (2, 10244344), (4, 5122172), (8, 2561086), (11, 1862608), (16, 1280543), (19, 1078352), (22, 931304), (38, 539176), (44, 465652), (76, 269588), (88, 232826), (121, 169328), (152, 134794), (176, 116413), (209, 98032), (242, 84664), (304, 67397), (418, 49016), (484, 42332), (557, 36784), (836, 24508), (968, 21166), (1114, 18392), (1672, 12254), (1936, 10583), (2228, 9196), (2299, 8912), (3344, 6127), (4456, 4598)]