20033620

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{16421}}^1$

素因数の和:16491

約数の個数: 24

約数和(自身を含む): 42762888

約数和(自身を除く): 22729268

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220, 16421, 32842, 65684, 82105, 164210, 328420, 1001681, 2003362, 4006724, 5008405, 10016810, 20033620]

約数ペア:

[(1, 20033620), (2, 10016810), (4, 5008405), (5, 4006724), (10, 2003362), (20, 1001681), (61, 328420), (122, 164210), (244, 82105), (305, 65684), (610, 32842), (1220, 16421)]