19912456

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{269}}^1\times {\mathrm{487}}^1$

素因数の和:781

約数の個数: 32

約数和(自身を含む): 39528000

約数和(自身を除く): 19615544

約数列:

[1, 2, 4, 8, 19, 38, 76, 152, 269, 487, 538, 974, 1076, 1948, 2152, 3896, 5111, 9253, 10222, 18506, 20444, 37012, 40888, 74024, 131003, 262006, 524012, 1048024, 2489057, 4978114, 9956228, 19912456]

約数ペア:

[(1, 19912456), (2, 9956228), (4, 4978114), (8, 2489057), (19, 1048024), (38, 524012), (76, 262006), (152, 131003), (269, 74024), (487, 40888), (538, 37012), (974, 20444), (1076, 18506), (1948, 10222), (2152, 9253), (3896, 5111)]