20444420

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{101}}^1\times {\mathrm{349}}^1$

素因数の和:488

約数の個数: 48

約数和(自身を含む): 44982000

約数和(自身を除く): 24537580

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 101, 116, 145, 202, 290, 349, 404, 505, 580, 698, 1010, 1396, 1745, 2020, 2929, 3490, 5858, 6980, 10121, 11716, 14645, 20242, 29290, 35249, 40484, 50605, 58580, 70498, 101210, 140996, 176245, 202420, 352490, 704980, 1022221, 2044442, 4088884, 5111105, 10222210, 20444420]

約数ペア:

[(1, 20444420), (2, 10222210), (4, 5111105), (5, 4088884), (10, 2044442), (20, 1022221), (29, 704980), (58, 352490), (101, 202420), (116, 176245), (145, 140996), (202, 101210), (290, 70498), (349, 58580), (404, 50605), (505, 40484), (580, 35249), (698, 29290), (1010, 20242), (1396, 14645), (1745, 11716), (2020, 10121), (2929, 6980), (3490, 5858)]