20539810

素因数分解:

$2^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{1291}}^1$

素因数の和:1378

約数の個数: 32

約数和(自身を含む): 38884032

約数和(自身を除く): 18344222

約数列:

[1, 2, 5, 10, 37, 43, 74, 86, 185, 215, 370, 430, 1291, 1591, 2582, 3182, 6455, 7955, 12910, 15910, 47767, 55513, 95534, 111026, 238835, 277565, 477670, 555130, 2053981, 4107962, 10269905, 20539810]

約数ペア:

[(1, 20539810), (2, 10269905), (5, 4107962), (10, 2053981), (37, 555130), (43, 477670), (74, 277565), (86, 238835), (185, 111026), (215, 95534), (370, 55513), (430, 47767), (1291, 15910), (1591, 12910), (2582, 7955), (3182, 6455)]