21528647

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{113}}^1\times {\mathrm{1601}}^1$

素因数の和:1738

約数の個数: 16

約数和(自身を含む): 26298432

約数和(自身を除く): 4769785

約数列:

[1, 7, 17, 113, 119, 791, 1601, 1921, 11207, 13447, 27217, 180913, 190519, 1266391, 3075521, 21528647]

約数ペア:

[(1, 21528647), (7, 3075521), (17, 1266391), (113, 190519), (119, 180913), (791, 27217), (1601, 13447), (1921, 11207)]