21821325

素因数分解:

$3^1\times 5^2\times {\mathrm{131}}^1\times {\mathrm{2221}}^1$

素因数の和:2365

約数の個数: 24

約数和(自身を含む): 36369696

約数和(自身を除く): 14548371

約数列:

[1, 3, 5, 15, 25, 75, 131, 393, 655, 1965, 2221, 3275, 6663, 9825, 11105, 33315, 55525, 166575, 290951, 872853, 1454755, 4364265, 7273775, 21821325]

約数ペア:

[(1, 21821325), (3, 7273775), (5, 4364265), (15, 1454755), (25, 872853), (75, 290951), (131, 166575), (393, 55525), (655, 33315), (1965, 11105), (2221, 9825), (3275, 6663)]