128519620

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^2\times {\mathrm{2909}}^1$

素因数の和:3012

約数の個数: 36

約数和(自身を含む): 275850540

約数和(自身を除く): 147330920

約数列:

[1, 2, 4, 5, 10, 20, 47, 94, 188, 235, 470, 940, 2209, 2909, 4418, 5818, 8836, 11045, 11636, 14545, 22090, 29090, 44180, 58180, 136723, 273446, 546892, 683615, 1367230, 2734460, 6425981, 12851962, 25703924, 32129905, 64259810, 128519620]

約数ペア:

[(1, 128519620), (2, 64259810), (4, 32129905), (5, 25703924), (10, 12851962), (20, 6425981), (47, 2734460), (94, 1367230), (188, 683615), (235, 546892), (470, 273446), (940, 136723), (2209, 58180), (2909, 44180), (4418, 29090), (5818, 22090), (8836, 14545), (11045, 11636)]