21439825

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{1471}}^1$

素因数の和:1545

約数の個数: 24

約数和(自身を含む): 29569536

約数和(自身を除く): 8129711

約数列:

[1, 5, 11, 25, 53, 55, 265, 275, 583, 1325, 1471, 2915, 7355, 14575, 16181, 36775, 77963, 80905, 389815, 404525, 857593, 1949075, 4287965, 21439825]

約数ペア:

[(1, 21439825), (5, 4287965), (11, 1949075), (25, 857593), (53, 404525), (55, 389815), (265, 80905), (275, 77963), (583, 36775), (1325, 16181), (1471, 14575), (2915, 7355)]