20526308

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{571}}^1$

素因数の和:648

約数の個数: 48

約数和(自身を含む): 42282240

約数和(自身を除く): 21755932

約数列:

[1, 2, 4, 11, 19, 22, 38, 43, 44, 76, 86, 172, 209, 418, 473, 571, 817, 836, 946, 1142, 1634, 1892, 2284, 3268, 6281, 8987, 10849, 12562, 17974, 21698, 24553, 25124, 35948, 43396, 49106, 98212, 119339, 238678, 270083, 466507, 477356, 540166, 933014, 1080332, 1866028, 5131577, 10263154, 20526308]

約数ペア:

[(1, 20526308), (2, 10263154), (4, 5131577), (11, 1866028), (19, 1080332), (22, 933014), (38, 540166), (43, 477356), (44, 466507), (76, 270083), (86, 238678), (172, 119339), (209, 98212), (418, 49106), (473, 43396), (571, 35948), (817, 25124), (836, 24553), (946, 21698), (1142, 17974), (1634, 12562), (1892, 10849), (2284, 8987), (3268, 6281)]