21290488

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{140069}}^1$

素因数の和:140094

約数の個数: 16

約数和(自身を含む): 42021000

約数和(自身を除く): 20730512

約数列:

[1, 2, 4, 8, 19, 38, 76, 152, 140069, 280138, 560276, 1120552, 2661311, 5322622, 10645244, 21290488]

約数ペア:

[(1, 21290488), (2, 10645244), (4, 5322622), (8, 2661311), (19, 1120552), (38, 560276), (76, 280138), (152, 140069)]