20712748

素因数分解:

$2^2\times 7^1\times {\mathrm{37}}^1\times {\mathrm{19993}}^1$

素因数の和:20041

約数の個数: 24

約数和(自身を含む): 42547232

約数和(自身を除く): 21834484

約数列:

[1, 2, 4, 7, 14, 28, 37, 74, 148, 259, 518, 1036, 19993, 39986, 79972, 139951, 279902, 559804, 739741, 1479482, 2958964, 5178187, 10356374, 20712748]

約数ペア:

[(1, 20712748), (2, 10356374), (4, 5178187), (7, 2958964), (14, 1479482), (28, 739741), (37, 559804), (74, 279902), (148, 139951), (259, 79972), (518, 39986), (1036, 19993)]