78843580

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{139}}^1\times {\mathrm{359}}^1$

素因数の和:586

約数の個数: 48

約数和(自身を含む): 169344000

約数和(自身を除く): 90500420

約数列:

[1, 2, 4, 5, 10, 20, 79, 139, 158, 278, 316, 359, 395, 556, 695, 718, 790, 1390, 1436, 1580, 1795, 2780, 3590, 7180, 10981, 21962, 28361, 43924, 49901, 54905, 56722, 99802, 109810, 113444, 141805, 199604, 219620, 249505, 283610, 499010, 567220, 998020, 3942179, 7884358, 15768716, 19710895, 39421790, 78843580]

約数ペア:

[(1, 78843580), (2, 39421790), (4, 19710895), (5, 15768716), (10, 7884358), (20, 3942179), (79, 998020), (139, 567220), (158, 499010), (278, 283610), (316, 249505), (359, 219620), (395, 199604), (556, 141805), (695, 113444), (718, 109810), (790, 99802), (1390, 56722), (1436, 54905), (1580, 49901), (1795, 43924), (2780, 28361), (3590, 21962), (7180, 10981)]