18870735

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{71}}^1$

素因数の和:168

約数の個数: 64

約数和(自身を含む): 34836480

約数和(自身を除く): 15965745

約数列:

[1, 3, 5, 13, 15, 29, 39, 47, 65, 71, 87, 141, 145, 195, 213, 235, 355, 377, 435, 611, 705, 923, 1065, 1131, 1363, 1833, 1885, 2059, 2769, 3055, 3337, 4089, 4615, 5655, 6177, 6815, 9165, 10011, 10295, 13845, 16685, 17719, 20445, 26767, 30885, 43381, 50055, 53157, 80301, 88595, 96773, 130143, 133835, 216905, 265785, 290319, 401505, 483865, 650715, 1258049, 1451595, 3774147, 6290245, 18870735]

約数ペア:

[(1, 18870735), (3, 6290245), (5, 3774147), (13, 1451595), (15, 1258049), (29, 650715), (39, 483865), (47, 401505), (65, 290319), (71, 265785), (87, 216905), (141, 133835), (145, 130143), (195, 96773), (213, 88595), (235, 80301), (355, 53157), (377, 50055), (435, 43381), (611, 30885), (705, 26767), (923, 20445), (1065, 17719), (1131, 16685), (1363, 13845), (1833, 10295), (1885, 10011), (2059, 9165), (2769, 6815), (3055, 6177), (3337, 5655), (4089, 4615)]