18175640

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{467}}^1$

素因数の和:624

約数の個数: 64

約数和(自身を含む): 47174400

約数和(自身を除く): 28998760

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 139, 140, 278, 280, 467, 556, 695, 934, 973, 1112, 1390, 1868, 1946, 2335, 2780, 3269, 3736, 3892, 4670, 4865, 5560, 6538, 7784, 9340, 9730, 13076, 16345, 18680, 19460, 26152, 32690, 38920, 64913, 65380, 129826, 130760, 259652, 324565, 454391, 519304, 649130, 908782, 1298260, 1817564, 2271955, 2596520, 3635128, 4543910, 9087820, 18175640]

約数ペア:

[(1, 18175640), (2, 9087820), (4, 4543910), (5, 3635128), (7, 2596520), (8, 2271955), (10, 1817564), (14, 1298260), (20, 908782), (28, 649130), (35, 519304), (40, 454391), (56, 324565), (70, 259652), (139, 130760), (140, 129826), (278, 65380), (280, 64913), (467, 38920), (556, 32690), (695, 26152), (934, 19460), (973, 18680), (1112, 16345), (1390, 13076), (1868, 9730), (1946, 9340), (2335, 7784), (2780, 6538), (3269, 5560), (3736, 4865), (3892, 4670)]