2161725

素因数分解:

$3^1\times 5^2\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{41}}^1$

素因数の和:110

約数の個数: 48

約数和(自身を含む): 3958080

約数和(自身を除く): 1796355

約数列:

[1, 3, 5, 15, 19, 25, 37, 41, 57, 75, 95, 111, 123, 185, 205, 285, 475, 555, 615, 703, 779, 925, 1025, 1425, 1517, 2109, 2337, 2775, 3075, 3515, 3895, 4551, 7585, 10545, 11685, 17575, 19475, 22755, 28823, 37925, 52725, 58425, 86469, 113775, 144115, 432345, 720575, 2161725]

約数ペア:

[(1, 2161725), (3, 720575), (5, 432345), (15, 144115), (19, 113775), (25, 86469), (37, 58425), (41, 52725), (57, 37925), (75, 28823), (95, 22755), (111, 19475), (123, 17575), (185, 11685), (205, 10545), (285, 7585), (475, 4551), (555, 3895), (615, 3515), (703, 3075), (779, 2775), (925, 2337), (1025, 2109), (1425, 1517)]