81135820

素因数分解:

$2^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{83}}^1\times {\mathrm{1321}}^1$

素因数の和:1450

約数の個数: 48

約数和(自身を含む): 177232608

約数和(自身を除く): 96096788

約数列:

[1, 2, 4, 5, 10, 20, 37, 74, 83, 148, 166, 185, 332, 370, 415, 740, 830, 1321, 1660, 2642, 3071, 5284, 6142, 6605, 12284, 13210, 15355, 26420, 30710, 48877, 61420, 97754, 109643, 195508, 219286, 244385, 438572, 488770, 548215, 977540, 1096430, 2192860, 4056791, 8113582, 16227164, 20283955, 40567910, 81135820]

約数ペア:

[(1, 81135820), (2, 40567910), (4, 20283955), (5, 16227164), (10, 8113582), (20, 4056791), (37, 2192860), (74, 1096430), (83, 977540), (148, 548215), (166, 488770), (185, 438572), (332, 244385), (370, 219286), (415, 195508), (740, 109643), (830, 97754), (1321, 61420), (1660, 48877), (2642, 30710), (3071, 26420), (5284, 15355), (6142, 13210), (6605, 12284)]