21034420

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{4157}}^1$

素因数の和:4200

約数の個数: 48

約数和(自身を含む): 50295168

約数和(自身を除く): 29260748

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 23, 44, 46, 55, 92, 110, 115, 220, 230, 253, 460, 506, 1012, 1265, 2530, 4157, 5060, 8314, 16628, 20785, 41570, 45727, 83140, 91454, 95611, 182908, 191222, 228635, 382444, 457270, 478055, 914540, 956110, 1051721, 1912220, 2103442, 4206884, 5258605, 10517210, 21034420]

約数ペア:

[(1, 21034420), (2, 10517210), (4, 5258605), (5, 4206884), (10, 2103442), (11, 1912220), (20, 1051721), (22, 956110), (23, 914540), (44, 478055), (46, 457270), (55, 382444), (92, 228635), (110, 191222), (115, 182908), (220, 95611), (230, 91454), (253, 83140), (460, 45727), (506, 41570), (1012, 20785), (1265, 16628), (2530, 8314), (4157, 5060)]