19915844

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{449}}^1\times {\mathrm{853}}^1$

素因数の和:1319

約数の個数: 24

約数和(自身を含む): 37661400

約数和(自身を除く): 17745556

約数列:

[1, 2, 4, 13, 26, 52, 449, 853, 898, 1706, 1796, 3412, 5837, 11089, 11674, 22178, 23348, 44356, 382997, 765994, 1531988, 4978961, 9957922, 19915844]

約数ペア:

[(1, 19915844), (2, 9957922), (4, 4978961), (13, 1531988), (26, 765994), (52, 382997), (449, 44356), (853, 23348), (898, 22178), (1706, 11674), (1796, 11089), (3412, 5837)]