21131012

素因数分解:

$2^2\times 7^1\times {\mathrm{47}}^1\times {\mathrm{16057}}^1$

素因数の和:16115

約数の個数: 24

約数和(自身を含む): 43163904

約数和(自身を除く): 22032892

約数列:

[1, 2, 4, 7, 14, 28, 47, 94, 188, 329, 658, 1316, 16057, 32114, 64228, 112399, 224798, 449596, 754679, 1509358, 3018716, 5282753, 10565506, 21131012]

約数ペア:

[(1, 21131012), (2, 10565506), (4, 5282753), (7, 3018716), (14, 1509358), (28, 754679), (47, 449596), (94, 224798), (188, 112399), (329, 64228), (658, 32114), (1316, 16057)]