20307620

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{131}}^1\times {\mathrm{337}}^1$

素因数の和:500

約数の個数: 48

約数和(自身を含む): 44972928

約数和(自身を除く): 24665308

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 115, 131, 230, 262, 337, 460, 524, 655, 674, 1310, 1348, 1685, 2620, 3013, 3370, 6026, 6740, 7751, 12052, 15065, 15502, 30130, 31004, 38755, 44147, 60260, 77510, 88294, 155020, 176588, 220735, 441470, 882940, 1015381, 2030762, 4061524, 5076905, 10153810, 20307620]

約数ペア:

[(1, 20307620), (2, 10153810), (4, 5076905), (5, 4061524), (10, 2030762), (20, 1015381), (23, 882940), (46, 441470), (92, 220735), (115, 176588), (131, 155020), (230, 88294), (262, 77510), (337, 60260), (460, 44147), (524, 38755), (655, 31004), (674, 30130), (1310, 15502), (1348, 15065), (1685, 12052), (2620, 7751), (3013, 6740), (3370, 6026)]