21383835

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^2\times {\mathrm{359}}^1$

素因数の和:416

約数の個数: 48

約数和(自身を含む): 39502080

約数和(自身を除く): 18118245

約数列:

[1, 3, 5, 11, 15, 19, 33, 55, 57, 95, 165, 209, 285, 359, 361, 627, 1045, 1077, 1083, 1795, 1805, 3135, 3949, 3971, 5385, 5415, 6821, 11847, 11913, 19745, 19855, 20463, 34105, 59235, 59565, 75031, 102315, 129599, 225093, 375155, 388797, 647995, 1125465, 1425589, 1943985, 4276767, 7127945, 21383835]

約数ペア:

[(1, 21383835), (3, 7127945), (5, 4276767), (11, 1943985), (15, 1425589), (19, 1125465), (33, 647995), (55, 388797), (57, 375155), (95, 225093), (165, 129599), (209, 102315), (285, 75031), (359, 59565), (361, 59235), (627, 34105), (1045, 20463), (1077, 19855), (1083, 19745), (1795, 11913), (1805, 11847), (3135, 6821), (3949, 5415), (3971, 5385)]