18985545

素因数分解:

$3^2\times 5^1\times {\mathrm{107}}^1\times {\mathrm{3943}}^1$

素因数の和:4061

約数の個数: 24

約数和(自身を含む): 33224256

約数和(自身を除く): 14238711

約数列:

[1, 3, 5, 9, 15, 45, 107, 321, 535, 963, 1605, 3943, 4815, 11829, 19715, 35487, 59145, 177435, 421901, 1265703, 2109505, 3797109, 6328515, 18985545]

約数ペア:

[(1, 18985545), (3, 6328515), (5, 3797109), (9, 2109505), (15, 1265703), (45, 421901), (107, 177435), (321, 59145), (535, 35487), (963, 19715), (1605, 11829), (3943, 4815)]