16541020

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^2\times {\mathrm{29}}^1\times {\mathrm{79}}^1$

素因数の和:155

約数の個数: 72

約数和(自身を含む): 38404800

約数和(自身を除く): 21863780

約数列:

[1, 2, 4, 5, 10, 19, 20, 29, 38, 58, 76, 79, 95, 116, 145, 158, 190, 290, 316, 361, 380, 395, 551, 580, 722, 790, 1102, 1444, 1501, 1580, 1805, 2204, 2291, 2755, 3002, 3610, 4582, 5510, 6004, 7220, 7505, 9164, 10469, 11020, 11455, 15010, 20938, 22910, 28519, 30020, 41876, 43529, 45820, 52345, 57038, 87058, 104690, 114076, 142595, 174116, 209380, 217645, 285190, 435290, 570380, 827051, 870580, 1654102, 3308204, 4135255, 8270510, 16541020]

約数ペア:

[(1, 16541020), (2, 8270510), (4, 4135255), (5, 3308204), (10, 1654102), (19, 870580), (20, 827051), (29, 570380), (38, 435290), (58, 285190), (76, 217645), (79, 209380), (95, 174116), (116, 142595), (145, 114076), (158, 104690), (190, 87058), (290, 57038), (316, 52345), (361, 45820), (380, 43529), (395, 41876), (551, 30020), (580, 28519), (722, 22910), (790, 20938), (1102, 15010), (1444, 11455), (1501, 11020), (1580, 10469), (1805, 9164), (2204, 7505), (2291, 7220), (2755, 6004), (3002, 5510), (3610, 4582)]