21290248

素因数分解:

$2^3\times 7^1\times {\mathrm{47}}^1\times {\mathrm{8089}}^1$

素因数の和:8149

約数の個数: 32

約数和(自身を含む): 46598400

約数和(自身を除く): 25308152

約数列:

[1, 2, 4, 7, 8, 14, 28, 47, 56, 94, 188, 329, 376, 658, 1316, 2632, 8089, 16178, 32356, 56623, 64712, 113246, 226492, 380183, 452984, 760366, 1520732, 2661281, 3041464, 5322562, 10645124, 21290248]

約数ペア:

[(1, 21290248), (2, 10645124), (4, 5322562), (7, 3041464), (8, 2661281), (14, 1520732), (28, 760366), (47, 452984), (56, 380183), (94, 226492), (188, 113246), (329, 64712), (376, 56623), (658, 32356), (1316, 16178), (2632, 8089)]