21169278

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^2\times {\mathrm{6959}}^1$

素因数の和:6993

約数の個数: 36

約数和(自身を含む): 49673520

約数和(自身を除く): 28504242

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 39, 78, 117, 169, 234, 338, 507, 1014, 1521, 3042, 6959, 13918, 20877, 41754, 62631, 90467, 125262, 180934, 271401, 542802, 814203, 1176071, 1628406, 2352142, 3528213, 7056426, 10584639, 21169278]

約数ペア:

[(1, 21169278), (2, 10584639), (3, 7056426), (6, 3528213), (9, 2352142), (13, 1628406), (18, 1176071), (26, 814203), (39, 542802), (78, 271401), (117, 180934), (169, 125262), (234, 90467), (338, 62631), (507, 41754), (1014, 20877), (1521, 13918), (3042, 6959)]