20011384520

素因数分解:

$2^3\times 5^1\times {\mathrm{101}}^1\times {\mathrm{4953313}}^1$

素因数の和:4953425

約数の個数: 32

約数和(自身を含む): 45471422520

約数和(自身を除く): 25460038000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 101, 202, 404, 505, 808, 1010, 2020, 4040, 4953313, 9906626, 19813252, 24766565, 39626504, 49533130, 99066260, 198132520, 500284613, 1000569226, 2001138452, 2501423065, 4002276904, 5002846130, 10005692260, 20011384520]

約数ペア:

[(1, 20011384520), (2, 10005692260), (4, 5002846130), (5, 4002276904), (8, 2501423065), (10, 2001138452), (20, 1000569226), (40, 500284613), (101, 198132520), (202, 99066260), (404, 49533130), (505, 39626504), (808, 24766565), (1010, 19813252), (2020, 9906626), (4040, 4953313)]