19779856

素因数分解:

$2^4\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{907}}^1$

素因数の和:991

約数の個数: 40

約数和(自身を含む): 40533120

約数和(自身を除く): 20753264

約数列:

[1, 2, 4, 8, 16, 29, 47, 58, 94, 116, 188, 232, 376, 464, 752, 907, 1363, 1814, 2726, 3628, 5452, 7256, 10904, 14512, 21808, 26303, 42629, 52606, 85258, 105212, 170516, 210424, 341032, 420848, 682064, 1236241, 2472482, 4944964, 9889928, 19779856]

約数ペア:

[(1, 19779856), (2, 9889928), (4, 4944964), (8, 2472482), (16, 1236241), (29, 682064), (47, 420848), (58, 341032), (94, 210424), (116, 170516), (188, 105212), (232, 85258), (376, 52606), (464, 42629), (752, 26303), (907, 21808), (1363, 14512), (1814, 10904), (2726, 7256), (3628, 5452)]