21748748

素因数分解:

$2^2\times 7^2\times {\mathrm{37}}^1\times {\mathrm{2999}}^1$

素因数の和:3054

約数の個数: 36

約数和(自身を含む): 45486000

約数和(自身を除く): 23737252

約数列:

[1, 2, 4, 7, 14, 28, 37, 49, 74, 98, 148, 196, 259, 518, 1036, 1813, 2999, 3626, 5998, 7252, 11996, 20993, 41986, 83972, 110963, 146951, 221926, 293902, 443852, 587804, 776741, 1553482, 3106964, 5437187, 10874374, 21748748]

約数ペア:

[(1, 21748748), (2, 10874374), (4, 5437187), (7, 3106964), (14, 1553482), (28, 776741), (37, 587804), (49, 443852), (74, 293902), (98, 221926), (148, 146951), (196, 110963), (259, 83972), (518, 41986), (1036, 20993), (1813, 11996), (2999, 7252), (3626, 5998)]