20421688

素因数分解:

$2^3\times 7^1\times {\mathrm{47}}^1\times {\mathrm{7759}}^1$

素因数の和:7819

約数の個数: 32

約数和(自身を含む): 44697600

約数和(自身を除く): 24275912

約数列:

[1, 2, 4, 7, 8, 14, 28, 47, 56, 94, 188, 329, 376, 658, 1316, 2632, 7759, 15518, 31036, 54313, 62072, 108626, 217252, 364673, 434504, 729346, 1458692, 2552711, 2917384, 5105422, 10210844, 20421688]

約数ペア:

[(1, 20421688), (2, 10210844), (4, 5105422), (7, 2917384), (8, 2552711), (14, 1458692), (28, 729346), (47, 434504), (56, 364673), (94, 217252), (188, 108626), (329, 62072), (376, 54313), (658, 31036), (1316, 15518), (2632, 7759)]