820767340

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{359}}^1\times {\mathrm{1447}}^1$

素因数の和:1894

約数の個数: 48

約数和(自身を含む): 1751500800

約数和(自身を除く): 930733460

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 316, 359, 395, 718, 790, 1436, 1447, 1580, 1795, 2894, 3590, 5788, 7180, 7235, 14470, 28361, 28940, 56722, 113444, 114313, 141805, 228626, 283610, 457252, 519473, 567220, 571565, 1038946, 1143130, 2077892, 2286260, 2597365, 5194730, 10389460, 41038367, 82076734, 164153468, 205191835, 410383670, 820767340]

約数ペア:

[(1, 820767340), (2, 410383670), (4, 205191835), (5, 164153468), (10, 82076734), (20, 41038367), (79, 10389460), (158, 5194730), (316, 2597365), (359, 2286260), (395, 2077892), (718, 1143130), (790, 1038946), (1436, 571565), (1447, 567220), (1580, 519473), (1795, 457252), (2894, 283610), (3590, 228626), (5788, 141805), (7180, 114313), (7235, 113444), (14470, 56722), (28361, 28940)]