20725990

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{97}}^1\times {\mathrm{929}}^1$

素因数の和:1056

約数の個数: 32

約数和(自身を含む): 39372480

約数和(自身を除く): 18646490

約数列:

[1, 2, 5, 10, 23, 46, 97, 115, 194, 230, 485, 929, 970, 1858, 2231, 4462, 4645, 9290, 11155, 21367, 22310, 42734, 90113, 106835, 180226, 213670, 450565, 901130, 2072599, 4145198, 10362995, 20725990]

約数ペア:

[(1, 20725990), (2, 10362995), (5, 4145198), (10, 2072599), (23, 901130), (46, 450565), (97, 213670), (115, 180226), (194, 106835), (230, 90113), (485, 42734), (929, 22310), (970, 21367), (1858, 11155), (2231, 9290), (4462, 4645)]