665555280

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{213319}}^1$

素因数の和:213348

約数の個数: 80

約数和(自身を含む): 2221941120

約数和(自身を除く): 1556385840

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 39, 40, 48, 52, 60, 65, 78, 80, 104, 120, 130, 156, 195, 208, 240, 260, 312, 390, 520, 624, 780, 1040, 1560, 3120, 213319, 426638, 639957, 853276, 1066595, 1279914, 1706552, 2133190, 2559828, 2773147, 3199785, 3413104, 4266380, 5119656, 5546294, 6399570, 8319441, 8532760, 10239312, 11092588, 12799140, 13865735, 16638882, 17065520, 22185176, 25598280, 27731470, 33277764, 41597205, 44370352, 51196560, 55462940, 66555528, 83194410, 110925880, 133111056, 166388820, 221851760, 332777640, 665555280]

約数ペア:

[(1, 665555280), (2, 332777640), (3, 221851760), (4, 166388820), (5, 133111056), (6, 110925880), (8, 83194410), (10, 66555528), (12, 55462940), (13, 51196560), (15, 44370352), (16, 41597205), (20, 33277764), (24, 27731470), (26, 25598280), (30, 22185176), (39, 17065520), (40, 16638882), (48, 13865735), (52, 12799140), (60, 11092588), (65, 10239312), (78, 8532760), (80, 8319441), (104, 6399570), (120, 5546294), (130, 5119656), (156, 4266380), (195, 3413104), (208, 3199785), (240, 2773147), (260, 2559828), (312, 2133190), (390, 1706552), (520, 1279914), (624, 1066595), (780, 853276), (1040, 639957), (1560, 426638), (3120, 213319)]