19976374

素因数分解:

$2^1\times {\mathrm{11}}^2\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{97}}^1$

素因数の和:181

約数の個数: 48

約数和(自身を含む): 35661024

約数和(自身を除く): 15684650

約数列:

[1, 2, 11, 22, 23, 37, 46, 74, 97, 121, 194, 242, 253, 407, 506, 814, 851, 1067, 1702, 2134, 2231, 2783, 3589, 4462, 4477, 5566, 7178, 8954, 9361, 11737, 18722, 23474, 24541, 39479, 49082, 78958, 82547, 102971, 165094, 205942, 269951, 434269, 539902, 868538, 908017, 1816034, 9988187, 19976374]

約数ペア:

[(1, 19976374), (2, 9988187), (11, 1816034), (22, 908017), (23, 868538), (37, 539902), (46, 434269), (74, 269951), (97, 205942), (121, 165094), (194, 102971), (242, 82547), (253, 78958), (407, 49082), (506, 39479), (814, 24541), (851, 23474), (1067, 18722), (1702, 11737), (2134, 9361), (2231, 8954), (2783, 7178), (3589, 5566), (4462, 4477)]