21905468

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{107}}^1\times {\mathrm{127}}^1$

素因数の和:282

約数の個数: 48

約数和(自身を含む): 43352064

約数和(自身を除く): 21446596

約数列:

[1, 2, 4, 13, 26, 31, 52, 62, 107, 124, 127, 214, 254, 403, 428, 508, 806, 1391, 1612, 1651, 2782, 3302, 3317, 3937, 5564, 6604, 6634, 7874, 13268, 13589, 15748, 27178, 43121, 51181, 54356, 86242, 102362, 172484, 176657, 204724, 353314, 421259, 706628, 842518, 1685036, 5476367, 10952734, 21905468]

約数ペア:

[(1, 21905468), (2, 10952734), (4, 5476367), (13, 1685036), (26, 842518), (31, 706628), (52, 421259), (62, 353314), (107, 204724), (124, 176657), (127, 172484), (214, 102362), (254, 86242), (403, 54356), (428, 51181), (508, 43121), (806, 27178), (1391, 15748), (1612, 13589), (1651, 13268), (2782, 7874), (3302, 6634), (3317, 6604), (3937, 5564)]