20000915

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{97}}^1\times {\mathrm{163}}^1$

素因数の和:299

約数の個数: 32

約数和(自身を含む): 27772416

約数和(自身を除く): 7771501

約数列:

[1, 5, 11, 23, 55, 97, 115, 163, 253, 485, 815, 1067, 1265, 1793, 2231, 3749, 5335, 8965, 11155, 15811, 18745, 24541, 41239, 79055, 122705, 173921, 206195, 363653, 869605, 1818265, 4000183, 20000915]

約数ペア:

[(1, 20000915), (5, 4000183), (11, 1818265), (23, 869605), (55, 363653), (97, 206195), (115, 173921), (163, 122705), (253, 79055), (485, 41239), (815, 24541), (1067, 18745), (1265, 15811), (1793, 11155), (2231, 8965), (3749, 5335)]