78623960

素因数分解:

$2^3\times 5^1\times {\mathrm{79}}^1\times {\mathrm{139}}^1\times {\mathrm{179}}^1$

素因数の和:408

約数の個数: 64

約数和(自身を含む): 181440000

約数和(自身を除く): 102816040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 79, 139, 158, 179, 278, 316, 358, 395, 556, 632, 695, 716, 790, 895, 1112, 1390, 1432, 1580, 1790, 2780, 3160, 3580, 5560, 7160, 10981, 14141, 21962, 24881, 28282, 43924, 49762, 54905, 56564, 70705, 87848, 99524, 109810, 113128, 124405, 141410, 199048, 219620, 248810, 282820, 439240, 497620, 565640, 995240, 1965599, 3931198, 7862396, 9827995, 15724792, 19655990, 39311980, 78623960]

約数ペア:

[(1, 78623960), (2, 39311980), (4, 19655990), (5, 15724792), (8, 9827995), (10, 7862396), (20, 3931198), (40, 1965599), (79, 995240), (139, 565640), (158, 497620), (179, 439240), (278, 282820), (316, 248810), (358, 219620), (395, 199048), (556, 141410), (632, 124405), (695, 113128), (716, 109810), (790, 99524), (895, 87848), (1112, 70705), (1390, 56564), (1432, 54905), (1580, 49762), (1790, 43924), (2780, 28282), (3160, 24881), (3580, 21962), (5560, 14141), (7160, 10981)]