664342784

素因数分解:

$2^8\times 7^2\times {\mathrm{211}}^1\times {\mathrm{251}}^1$

素因数の和:492

約数の個数: 108

約数和(自身を含む): 1556080848

約数和(自身を除く): 891738064

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 49, 56, 64, 98, 112, 128, 196, 211, 224, 251, 256, 392, 422, 448, 502, 784, 844, 896, 1004, 1477, 1568, 1688, 1757, 1792, 2008, 2954, 3136, 3376, 3514, 4016, 5908, 6272, 6752, 7028, 8032, 10339, 11816, 12299, 12544, 13504, 14056, 16064, 20678, 23632, 24598, 27008, 28112, 32128, 41356, 47264, 49196, 52961, 54016, 56224, 64256, 82712, 94528, 98392, 105922, 112448, 165424, 189056, 196784, 211844, 224896, 330848, 370727, 378112, 393568, 423688, 449792, 661696, 741454, 787136, 847376, 1323392, 1482908, 1574272, 1694752, 2595089, 2646784, 2965816, 3148544, 3389504, 5190178, 5931632, 6779008, 10380356, 11863264, 13558016, 20760712, 23726528, 41521424, 47453056, 83042848, 94906112, 166085696, 332171392, 664342784]

約数ペア:

[(1, 664342784), (2, 332171392), (4, 166085696), (7, 94906112), (8, 83042848), (14, 47453056), (16, 41521424), (28, 23726528), (32, 20760712), (49, 13558016), (56, 11863264), (64, 10380356), (98, 6779008), (112, 5931632), (128, 5190178), (196, 3389504), (211, 3148544), (224, 2965816), (251, 2646784), (256, 2595089), (392, 1694752), (422, 1574272), (448, 1482908), (502, 1323392), (784, 847376), (844, 787136), (896, 741454), (1004, 661696), (1477, 449792), (1568, 423688), (1688, 393568), (1757, 378112), (1792, 370727), (2008, 330848), (2954, 224896), (3136, 211844), (3376, 196784), (3514, 189056), (4016, 165424), (5908, 112448), (6272, 105922), (6752, 98392), (7028, 94528), (8032, 82712), (10339, 64256), (11816, 56224), (12299, 54016), (12544, 52961), (13504, 49196), (14056, 47264), (16064, 41356), (20678, 32128), (23632, 28112), (24598, 27008)]