78156400

素因数分解:

$2^4\times 5^2\times 7^1\times {\mathrm{103}}^1\times {\mathrm{271}}^1$

素因数の和:399

約数の個数: 120

約数和(自身を含む): 217478144

約数和(自身を除く): 139321744

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 25, 28, 35, 40, 50, 56, 70, 80, 100, 103, 112, 140, 175, 200, 206, 271, 280, 350, 400, 412, 515, 542, 560, 700, 721, 824, 1030, 1084, 1355, 1400, 1442, 1648, 1897, 2060, 2168, 2575, 2710, 2800, 2884, 3605, 3794, 4120, 4336, 5150, 5420, 5768, 6775, 7210, 7588, 8240, 9485, 10300, 10840, 11536, 13550, 14420, 15176, 18025, 18970, 20600, 21680, 27100, 27913, 28840, 30352, 36050, 37940, 41200, 47425, 54200, 55826, 57680, 72100, 75880, 94850, 108400, 111652, 139565, 144200, 151760, 189700, 195391, 223304, 279130, 288400, 379400, 390782, 446608, 558260, 697825, 758800, 781564, 976955, 1116520, 1395650, 1563128, 1953910, 2233040, 2791300, 3126256, 3907820, 4884775, 5582600, 7815640, 9769550, 11165200, 15631280, 19539100, 39078200, 78156400]

約数ペア:

[(1, 78156400), (2, 39078200), (4, 19539100), (5, 15631280), (7, 11165200), (8, 9769550), (10, 7815640), (14, 5582600), (16, 4884775), (20, 3907820), (25, 3126256), (28, 2791300), (35, 2233040), (40, 1953910), (50, 1563128), (56, 1395650), (70, 1116520), (80, 976955), (100, 781564), (103, 758800), (112, 697825), (140, 558260), (175, 446608), (200, 390782), (206, 379400), (271, 288400), (280, 279130), (350, 223304), (400, 195391), (412, 189700), (515, 151760), (542, 144200), (560, 139565), (700, 111652), (721, 108400), (824, 94850), (1030, 75880), (1084, 72100), (1355, 57680), (1400, 55826), (1442, 54200), (1648, 47425), (1897, 41200), (2060, 37940), (2168, 36050), (2575, 30352), (2710, 28840), (2800, 27913), (2884, 27100), (3605, 21680), (3794, 20600), (4120, 18970), (4336, 18025), (5150, 15176), (5420, 14420), (5768, 13550), (6775, 11536), (7210, 10840), (7588, 10300), (8240, 9485)]