80416540

素因数分解:

$2^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{271}}^1\times {\mathrm{401}}^1$

素因数の和:718

約数の個数: 48

約数和(自身を含む): 174513024

約数和(自身を除く): 94096484

約数列:

[1, 2, 4, 5, 10, 20, 37, 74, 148, 185, 271, 370, 401, 542, 740, 802, 1084, 1355, 1604, 2005, 2710, 4010, 5420, 8020, 10027, 14837, 20054, 29674, 40108, 50135, 59348, 74185, 100270, 108671, 148370, 200540, 217342, 296740, 434684, 543355, 1086710, 2173420, 4020827, 8041654, 16083308, 20104135, 40208270, 80416540]

約数ペア:

[(1, 80416540), (2, 40208270), (4, 20104135), (5, 16083308), (10, 8041654), (20, 4020827), (37, 2173420), (74, 1086710), (148, 543355), (185, 434684), (271, 296740), (370, 217342), (401, 200540), (542, 148370), (740, 108671), (802, 100270), (1084, 74185), (1355, 59348), (1604, 50135), (2005, 40108), (2710, 29674), (4010, 20054), (5420, 14837), (8020, 10027)]