18868995

素因数分解:

$3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{761}}^1$

素因数の和:820

約数の個数: 48

約数和(自身を含む): 35661600

約数和(自身を除く): 16792605

約数列:

[1, 3, 5, 9, 15, 19, 29, 45, 57, 87, 95, 145, 171, 261, 285, 435, 551, 761, 855, 1305, 1653, 2283, 2755, 3805, 4959, 6849, 8265, 11415, 14459, 22069, 24795, 34245, 43377, 66207, 72295, 110345, 130131, 198621, 216885, 331035, 419311, 650655, 993105, 1257933, 2096555, 3773799, 6289665, 18868995]

約数ペア:

[(1, 18868995), (3, 6289665), (5, 3773799), (9, 2096555), (15, 1257933), (19, 993105), (29, 650655), (45, 419311), (57, 331035), (87, 216885), (95, 198621), (145, 130131), (171, 110345), (261, 72295), (285, 66207), (435, 43377), (551, 34245), (761, 24795), (855, 22069), (1305, 14459), (1653, 11415), (2283, 8265), (2755, 6849), (3805, 4959)]