18665505

素因数分解:

$3^3\times 5^1\times {\mathrm{19}}^2\times {\mathrm{383}}^1$

素因数の和:435

約数の個数: 48

約数和(自身を含む): 35112960

約数和(自身を除く): 16447455

約数列:

[1, 3, 5, 9, 15, 19, 27, 45, 57, 95, 135, 171, 285, 361, 383, 513, 855, 1083, 1149, 1805, 1915, 2565, 3249, 3447, 5415, 5745, 7277, 9747, 10341, 16245, 17235, 21831, 36385, 48735, 51705, 65493, 109155, 138263, 196479, 327465, 414789, 691315, 982395, 1244367, 2073945, 3733101, 6221835, 18665505]

約数ペア:

[(1, 18665505), (3, 6221835), (5, 3733101), (9, 2073945), (15, 1244367), (19, 982395), (27, 691315), (45, 414789), (57, 327465), (95, 196479), (135, 138263), (171, 109155), (285, 65493), (361, 51705), (383, 48735), (513, 36385), (855, 21831), (1083, 17235), (1149, 16245), (1805, 10341), (1915, 9747), (2565, 7277), (3249, 5745), (3447, 5415)]