19690875

素因数分解:

$3^2\times 5^3\times {\mathrm{23}}^1\times {\mathrm{761}}^1$

素因数の和:805

約数の個数: 48

約数和(自身を含む): 37088064

約数和(自身を除く): 17397189

約数列:

[1, 3, 5, 9, 15, 23, 25, 45, 69, 75, 115, 125, 207, 225, 345, 375, 575, 761, 1035, 1125, 1725, 2283, 2875, 3805, 5175, 6849, 8625, 11415, 17503, 19025, 25875, 34245, 52509, 57075, 87515, 95125, 157527, 171225, 262545, 285375, 437575, 787635, 856125, 1312725, 2187875, 3938175, 6563625, 19690875]

約数ペア:

[(1, 19690875), (3, 6563625), (5, 3938175), (9, 2187875), (15, 1312725), (23, 856125), (25, 787635), (45, 437575), (69, 285375), (75, 262545), (115, 171225), (125, 157527), (207, 95125), (225, 87515), (345, 57075), (375, 52509), (575, 34245), (761, 25875), (1035, 19025), (1125, 17503), (1725, 11415), (2283, 8625), (2875, 6849), (3805, 5175)]