21739004

素因数分解:

$2^2\times 7^1\times {\mathrm{47}}^1\times {\mathrm{16519}}^1$

素因数の和:16577

約数の個数: 24

約数和(自身を含む): 44405760

約数和(自身を除く): 22666756

約数列:

[1, 2, 4, 7, 14, 28, 47, 94, 188, 329, 658, 1316, 16519, 33038, 66076, 115633, 231266, 462532, 776393, 1552786, 3105572, 5434751, 10869502, 21739004]

約数ペア:

[(1, 21739004), (2, 10869502), (4, 5434751), (7, 3105572), (14, 1552786), (28, 776393), (47, 462532), (94, 231266), (188, 115633), (329, 66076), (658, 33038), (1316, 16519)]