20571411

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{1987}}^1$

素因数の和:2043

約数の個数: 32

約数和(自身を含む): 34352640

約数和(自身を除く): 13781229

約数列:

[1, 3, 7, 17, 21, 29, 51, 87, 119, 203, 357, 493, 609, 1479, 1987, 3451, 5961, 10353, 13909, 33779, 41727, 57623, 101337, 172869, 236453, 403361, 709359, 979591, 1210083, 2938773, 6857137, 20571411]

約数ペア:

[(1, 20571411), (3, 6857137), (7, 2938773), (17, 1210083), (21, 979591), (29, 709359), (51, 403361), (87, 236453), (119, 172869), (203, 101337), (357, 57623), (493, 41727), (609, 33779), (1479, 13909), (1987, 10353), (3451, 5961)]