1640226728

素因数分解:

$2^3\times 7^1\times {\mathrm{157}}^1\times {\mathrm{197}}^1\times {\mathrm{947}}^1$

素因数の和:1314

約数の個数: 64

約数和(自身を含む): 3558867840

約数和(自身を除く): 1918641112

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 157, 197, 314, 394, 628, 788, 947, 1099, 1256, 1379, 1576, 1894, 2198, 2758, 3788, 4396, 5516, 6629, 7576, 8792, 11032, 13258, 26516, 30929, 53032, 61858, 123716, 148679, 186559, 216503, 247432, 297358, 373118, 433006, 594716, 746236, 866012, 1040753, 1189432, 1305913, 1492472, 1732024, 2081506, 2611826, 4163012, 5223652, 8326024, 10447304, 29289763, 58579526, 117159052, 205028341, 234318104, 410056682, 820113364, 1640226728]

約数ペア:

[(1, 1640226728), (2, 820113364), (4, 410056682), (7, 234318104), (8, 205028341), (14, 117159052), (28, 58579526), (56, 29289763), (157, 10447304), (197, 8326024), (314, 5223652), (394, 4163012), (628, 2611826), (788, 2081506), (947, 1732024), (1099, 1492472), (1256, 1305913), (1379, 1189432), (1576, 1040753), (1894, 866012), (2198, 746236), (2758, 594716), (3788, 433006), (4396, 373118), (5516, 297358), (6629, 247432), (7576, 216503), (8792, 186559), (11032, 148679), (13258, 123716), (26516, 61858), (30929, 53032)]