21784688

素因数分解:

$2^4\times {\mathrm{47}}^1\times {\mathrm{59}}^1\times {\mathrm{491}}^1$

素因数の和:605

約数の個数: 40

約数和(自身を含む): 43925760

約数和(自身を除く): 22141072

約数列:

[1, 2, 4, 8, 16, 47, 59, 94, 118, 188, 236, 376, 472, 491, 752, 944, 982, 1964, 2773, 3928, 5546, 7856, 11092, 22184, 23077, 28969, 44368, 46154, 57938, 92308, 115876, 184616, 231752, 369232, 463504, 1361543, 2723086, 5446172, 10892344, 21784688]

約数ペア:

[(1, 21784688), (2, 10892344), (4, 5446172), (8, 2723086), (16, 1361543), (47, 463504), (59, 369232), (94, 231752), (118, 184616), (188, 115876), (236, 92308), (376, 57938), (472, 46154), (491, 44368), (752, 28969), (944, 23077), (982, 22184), (1964, 11092), (2773, 7856), (3928, 5546)]