21054356

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{5227}}^1$

素因数の和:5303

約数の個数: 24

約数和(自身を含む): 39523680

約数和(自身を除く): 18469324

約数列:

[1, 2, 4, 19, 38, 53, 76, 106, 212, 1007, 2014, 4028, 5227, 10454, 20908, 99313, 198626, 277031, 397252, 554062, 1108124, 5263589, 10527178, 21054356]

約数ペア:

[(1, 21054356), (2, 10527178), (4, 5263589), (19, 1108124), (38, 554062), (53, 397252), (76, 277031), (106, 198626), (212, 99313), (1007, 20908), (2014, 10454), (4028, 5227)]