8721640

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1\times {\mathrm{83}}^1$

素因数の和:202

約数の個数: 64

約数和(自身を含む): 20684160

約数和(自身を除く): 11962520

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 71, 74, 83, 142, 148, 166, 185, 284, 296, 332, 355, 370, 415, 568, 664, 710, 740, 830, 1420, 1480, 1660, 2627, 2840, 3071, 3320, 5254, 5893, 6142, 10508, 11786, 12284, 13135, 15355, 21016, 23572, 24568, 26270, 29465, 30710, 47144, 52540, 58930, 61420, 105080, 117860, 122840, 218041, 235720, 436082, 872164, 1090205, 1744328, 2180410, 4360820, 8721640]

約数ペア:

[(1, 8721640), (2, 4360820), (4, 2180410), (5, 1744328), (8, 1090205), (10, 872164), (20, 436082), (37, 235720), (40, 218041), (71, 122840), (74, 117860), (83, 105080), (142, 61420), (148, 58930), (166, 52540), (185, 47144), (284, 30710), (296, 29465), (332, 26270), (355, 24568), (370, 23572), (415, 21016), (568, 15355), (664, 13135), (710, 12284), (740, 11786), (830, 10508), (1420, 6142), (1480, 5893), (1660, 5254), (2627, 3320), (2840, 3071)]