20777328640

素因数分解:

$2^{13}\times 5^1\times {\mathrm{79}}^1\times {\mathrm{6421}}^1$

素因数の和:6531

約数の個数: 112

約数和(自身を含む): 50501580480

約数和(自身を除く): 29724251840

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 79, 80, 128, 158, 160, 256, 316, 320, 395, 512, 632, 640, 790, 1024, 1264, 1280, 1580, 2048, 2528, 2560, 3160, 4096, 5056, 5120, 6320, 6421, 8192, 10112, 10240, 12640, 12842, 20224, 20480, 25280, 25684, 32105, 40448, 40960, 50560, 51368, 64210, 80896, 101120, 102736, 128420, 161792, 202240, 205472, 256840, 323584, 404480, 410944, 507259, 513680, 647168, 808960, 821888, 1014518, 1027360, 1617920, 1643776, 2029036, 2054720, 2536295, 3235840, 3287552, 4058072, 4109440, 5072590, 6575104, 8116144, 8218880, 10145180, 13150208, 16232288, 16437760, 20290360, 26300416, 32464576, 32875520, 40580720, 52600832, 64929152, 65751040, 81161440, 129858304, 131502080, 162322880, 259716608, 263004160, 324645760, 519433216, 649291520, 1038866432, 1298583040, 2077732864, 2597166080, 4155465728, 5194332160, 10388664320, 20777328640]

約数ペア:

[(1, 20777328640), (2, 10388664320), (4, 5194332160), (5, 4155465728), (8, 2597166080), (10, 2077732864), (16, 1298583040), (20, 1038866432), (32, 649291520), (40, 519433216), (64, 324645760), (79, 263004160), (80, 259716608), (128, 162322880), (158, 131502080), (160, 129858304), (256, 81161440), (316, 65751040), (320, 64929152), (395, 52600832), (512, 40580720), (632, 32875520), (640, 32464576), (790, 26300416), (1024, 20290360), (1264, 16437760), (1280, 16232288), (1580, 13150208), (2048, 10145180), (2528, 8218880), (2560, 8116144), (3160, 6575104), (4096, 5072590), (5056, 4109440), (5120, 4058072), (6320, 3287552), (6421, 3235840), (8192, 2536295), (10112, 2054720), (10240, 2029036), (12640, 1643776), (12842, 1617920), (20224, 1027360), (20480, 1014518), (25280, 821888), (25684, 808960), (32105, 647168), (40448, 513680), (40960, 507259), (50560, 410944), (51368, 404480), (64210, 323584), (80896, 256840), (101120, 205472), (102736, 202240), (128420, 161792)]