90091280

素因数分解:

$2^4\times 5^1\times {\mathrm{199}}^1\times {\mathrm{5659}}^1$

素因数の和:5871

約数の個数: 40

約数和(自身を含む): 210552000

約数和(自身を除く): 120460720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 199, 398, 796, 995, 1592, 1990, 3184, 3980, 5659, 7960, 11318, 15920, 22636, 28295, 45272, 56590, 90544, 113180, 226360, 452720, 1126141, 2252282, 4504564, 5630705, 9009128, 11261410, 18018256, 22522820, 45045640, 90091280]

約数ペア:

[(1, 90091280), (2, 45045640), (4, 22522820), (5, 18018256), (8, 11261410), (10, 9009128), (16, 5630705), (20, 4504564), (40, 2252282), (80, 1126141), (199, 452720), (398, 226360), (796, 113180), (995, 90544), (1592, 56590), (1990, 45272), (3184, 28295), (3980, 22636), (5659, 15920), (7960, 11318)]