19667945

素因数分解:

$5^1\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{59}}^1$

素因数の和:134

約数の個数: 48

約数和(自身を含む): 28728000

約数和(自身を除く): 9060055

約数列:

[1, 5, 11, 19, 29, 55, 59, 95, 121, 145, 209, 295, 319, 551, 605, 649, 1045, 1121, 1595, 1711, 2299, 2755, 3245, 3509, 5605, 6061, 7139, 8555, 11495, 12331, 17545, 18821, 30305, 32509, 35695, 61655, 66671, 94105, 135641, 162545, 207031, 333355, 357599, 678205, 1035155, 1787995, 3933589, 19667945]

約数ペア:

[(1, 19667945), (5, 3933589), (11, 1787995), (19, 1035155), (29, 678205), (55, 357599), (59, 333355), (95, 207031), (121, 162545), (145, 135641), (209, 94105), (295, 66671), (319, 61655), (551, 35695), (605, 32509), (649, 30305), (1045, 18821), (1121, 17545), (1595, 12331), (1711, 11495), (2299, 8555), (2755, 7139), (3245, 6061), (3509, 5605)]