2780385280

素因数分解:

$2^{12}\times 5^1\times {\mathrm{349}}^1\times {\mathrm{389}}^1$

素因数の和:767

約数の個数: 104

約数和(自身を含む): 6708429000

約数和(自身を除く): 3928043720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 349, 389, 512, 640, 698, 778, 1024, 1280, 1396, 1556, 1745, 1945, 2048, 2560, 2792, 3112, 3490, 3890, 4096, 5120, 5584, 6224, 6980, 7780, 10240, 11168, 12448, 13960, 15560, 20480, 22336, 24896, 27920, 31120, 44672, 49792, 55840, 62240, 89344, 99584, 111680, 124480, 135761, 178688, 199168, 223360, 248960, 271522, 357376, 398336, 446720, 497920, 543044, 678805, 714752, 796672, 893440, 995840, 1086088, 1357610, 1429504, 1593344, 1786880, 1991680, 2172176, 2715220, 3573760, 3983360, 4344352, 5430440, 7147520, 7966720, 8688704, 10860880, 17377408, 21721760, 34754816, 43443520, 69509632, 86887040, 139019264, 173774080, 278038528, 347548160, 556077056, 695096320, 1390192640, 2780385280]

約数ペア:

[(1, 2780385280), (2, 1390192640), (4, 695096320), (5, 556077056), (8, 347548160), (10, 278038528), (16, 173774080), (20, 139019264), (32, 86887040), (40, 69509632), (64, 43443520), (80, 34754816), (128, 21721760), (160, 17377408), (256, 10860880), (320, 8688704), (349, 7966720), (389, 7147520), (512, 5430440), (640, 4344352), (698, 3983360), (778, 3573760), (1024, 2715220), (1280, 2172176), (1396, 1991680), (1556, 1786880), (1745, 1593344), (1945, 1429504), (2048, 1357610), (2560, 1086088), (2792, 995840), (3112, 893440), (3490, 796672), (3890, 714752), (4096, 678805), (5120, 543044), (5584, 497920), (6224, 446720), (6980, 398336), (7780, 357376), (10240, 271522), (11168, 248960), (12448, 223360), (13960, 199168), (15560, 178688), (20480, 135761), (22336, 124480), (24896, 111680), (27920, 99584), (31120, 89344), (44672, 62240), (49792, 55840)]