20785468

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^2\times {\mathrm{47}}^1$

素因数の和:127

約数の個数: 72

約数和(自身を含む): 44593920

約数和(自身を除く): 23808452

約数列:

[1, 2, 4, 11, 19, 22, 23, 38, 44, 46, 47, 76, 92, 94, 188, 209, 253, 418, 437, 506, 517, 529, 836, 874, 893, 1012, 1034, 1058, 1081, 1748, 1786, 2068, 2116, 2162, 3572, 4324, 4807, 5819, 9614, 9823, 10051, 11638, 11891, 19228, 19646, 20102, 20539, 23276, 23782, 24863, 39292, 40204, 41078, 47564, 49726, 82156, 99452, 110561, 221122, 225929, 273493, 442244, 451858, 472397, 546986, 903716, 944794, 1093972, 1889588, 5196367, 10392734, 20785468]

約数ペア:

[(1, 20785468), (2, 10392734), (4, 5196367), (11, 1889588), (19, 1093972), (22, 944794), (23, 903716), (38, 546986), (44, 472397), (46, 451858), (47, 442244), (76, 273493), (92, 225929), (94, 221122), (188, 110561), (209, 99452), (253, 82156), (418, 49726), (437, 47564), (506, 41078), (517, 40204), (529, 39292), (836, 24863), (874, 23782), (893, 23276), (1012, 20539), (1034, 20102), (1058, 19646), (1081, 19228), (1748, 11891), (1786, 11638), (2068, 10051), (2116, 9823), (2162, 9614), (3572, 5819), (4324, 4807)]