20167856

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{73}}^1\times {\mathrm{557}}^1$

素因数の和:669

約数の個数: 40

約数和(自身を含む): 40961664

約数和(自身を除く): 20793808

約数列:

[1, 2, 4, 8, 16, 31, 62, 73, 124, 146, 248, 292, 496, 557, 584, 1114, 1168, 2228, 2263, 4456, 4526, 8912, 9052, 17267, 18104, 34534, 36208, 40661, 69068, 81322, 138136, 162644, 276272, 325288, 650576, 1260491, 2520982, 5041964, 10083928, 20167856]

約数ペア:

[(1, 20167856), (2, 10083928), (4, 5041964), (8, 2520982), (16, 1260491), (31, 650576), (62, 325288), (73, 276272), (124, 162644), (146, 138136), (248, 81322), (292, 69068), (496, 40661), (557, 36208), (584, 34534), (1114, 18104), (1168, 17267), (2228, 9052), (2263, 8912), (4456, 4526)]