21476612

素因数分解:

$2^2\times {\mathrm{19}}^2\times {\mathrm{107}}^1\times {\mathrm{139}}^1$

素因数の和:288

約数の個数: 36

約数和(自身を含む): 40325040

約数和(自身を除く): 18848428

約数列:

[1, 2, 4, 19, 38, 76, 107, 139, 214, 278, 361, 428, 556, 722, 1444, 2033, 2641, 4066, 5282, 8132, 10564, 14873, 29746, 38627, 50179, 59492, 77254, 100358, 154508, 200716, 282587, 565174, 1130348, 5369153, 10738306, 21476612]

約数ペア:

[(1, 21476612), (2, 10738306), (4, 5369153), (19, 1130348), (38, 565174), (76, 282587), (107, 200716), (139, 154508), (214, 100358), (278, 77254), (361, 59492), (428, 50179), (556, 38627), (722, 29746), (1444, 14873), (2033, 10564), (2641, 8132), (4066, 5282)]