21037028

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{131}}^1\times {\mathrm{2113}}^1$

素因数の和:2267

約数の個数: 24

約数和(自身を含む): 39066720

約数和(自身を除く): 18029692

約数列:

[1, 2, 4, 19, 38, 76, 131, 262, 524, 2113, 2489, 4226, 4978, 8452, 9956, 40147, 80294, 160588, 276803, 553606, 1107212, 5259257, 10518514, 21037028]

約数ペア:

[(1, 21037028), (2, 10518514), (4, 5259257), (19, 1107212), (38, 553606), (76, 276803), (131, 160588), (262, 80294), (524, 40147), (2113, 9956), (2489, 8452), (4226, 4978)]