21072610

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{37}}^1\times {\mathrm{337}}^1$

素因数の和:407

約数の個数: 48

約数和(自身を含む): 42308136

約数和(自身を除く): 21235526

約数列:

[1, 2, 5, 10, 13, 26, 37, 65, 74, 130, 169, 185, 337, 338, 370, 481, 674, 845, 962, 1685, 1690, 2405, 3370, 4381, 4810, 6253, 8762, 12469, 12506, 21905, 24938, 31265, 43810, 56953, 62345, 62530, 113906, 124690, 162097, 284765, 324194, 569530, 810485, 1620970, 2107261, 4214522, 10536305, 21072610]

約数ペア:

[(1, 21072610), (2, 10536305), (5, 4214522), (10, 2107261), (13, 1620970), (26, 810485), (37, 569530), (65, 324194), (74, 284765), (130, 162097), (169, 124690), (185, 113906), (337, 62530), (338, 62345), (370, 56953), (481, 43810), (674, 31265), (845, 24938), (962, 21905), (1685, 12506), (1690, 12469), (2405, 8762), (3370, 6253), (4381, 4810)]