201000820

素因数分解:

$2^2\times 5^1\times {\mathrm{157}}^1\times {\mathrm{64013}}^1$

素因数の和:64179

約数の個数: 24

約数和(自身を含む): 424796904

約数和(自身を除く): 223796084

約数列:

[1, 2, 4, 5, 10, 20, 157, 314, 628, 785, 1570, 3140, 64013, 128026, 256052, 320065, 640130, 1280260, 10050041, 20100082, 40200164, 50250205, 100500410, 201000820]

約数ペア:

[(1, 201000820), (2, 100500410), (4, 50250205), (5, 40200164), (10, 20100082), (20, 10050041), (157, 1280260), (314, 640130), (628, 320065), (785, 256052), (1570, 128026), (3140, 64013)]