18978760

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{16361}}^1$

素因数の和:16401

約数の個数: 32

約数和(自身を含む): 44177400

約数和(自身を除く): 25198640

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 58, 116, 145, 232, 290, 580, 1160, 16361, 32722, 65444, 81805, 130888, 163610, 327220, 474469, 654440, 948938, 1897876, 2372345, 3795752, 4744690, 9489380, 18978760]

約数ペア:

[(1, 18978760), (2, 9489380), (4, 4744690), (5, 3795752), (8, 2372345), (10, 1897876), (20, 948938), (29, 654440), (40, 474469), (58, 327220), (116, 163610), (145, 130888), (232, 81805), (290, 65444), (580, 32722), (1160, 16361)]