21167690216

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{317}}^1\times {\mathrm{490993}}^1$

素因数の和:491333

約数の個数: 32

約数和(自身を含む): 42156744840

約数和(自身を除く): 20989054624

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 317, 634, 1268, 2536, 5389, 10778, 21556, 43112, 490993, 981986, 1963972, 3927944, 8346881, 16693762, 33387524, 66775048, 155644781, 311289562, 622579124, 1245158248, 2645961277, 5291922554, 10583845108, 21167690216]

約数ペア:

[(1, 21167690216), (2, 10583845108), (4, 5291922554), (8, 2645961277), (17, 1245158248), (34, 622579124), (68, 311289562), (136, 155644781), (317, 66775048), (634, 33387524), (1268, 16693762), (2536, 8346881), (5389, 3927944), (10778, 1963972), (21556, 981986), (43112, 490993)]