647997376

素因数分解:

$2^6\times {\mathrm{13}}^2\times {\mathrm{181}}^1\times {\mathrm{331}}^1$

素因数の和:550

約数の個数: 84

約数和(自身を含む): 1404314184

約数和(自身を除く): 756316808

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 64, 104, 169, 181, 208, 331, 338, 362, 416, 662, 676, 724, 832, 1324, 1352, 1448, 2353, 2648, 2704, 2896, 4303, 4706, 5296, 5408, 5792, 8606, 9412, 10592, 10816, 11584, 17212, 18824, 21184, 30589, 34424, 37648, 55939, 59911, 61178, 68848, 75296, 111878, 119822, 122356, 137696, 150592, 223756, 239644, 244712, 275392, 447512, 479288, 489424, 778843, 895024, 958576, 978848, 1557686, 1790048, 1917152, 1957696, 3115372, 3580096, 3834304, 6230744, 10124959, 12461488, 20249918, 24922976, 40499836, 49845952, 80999672, 161999344, 323998688, 647997376]

約数ペア:

[(1, 647997376), (2, 323998688), (4, 161999344), (8, 80999672), (13, 49845952), (16, 40499836), (26, 24922976), (32, 20249918), (52, 12461488), (64, 10124959), (104, 6230744), (169, 3834304), (181, 3580096), (208, 3115372), (331, 1957696), (338, 1917152), (362, 1790048), (416, 1557686), (662, 978848), (676, 958576), (724, 895024), (832, 778843), (1324, 489424), (1352, 479288), (1448, 447512), (2353, 275392), (2648, 244712), (2704, 239644), (2896, 223756), (4303, 150592), (4706, 137696), (5296, 122356), (5408, 119822), (5792, 111878), (8606, 75296), (9412, 68848), (10592, 61178), (10816, 59911), (11584, 55939), (17212, 37648), (18824, 34424), (21184, 30589)]