18315855

素因数分解:

$3^3\times 5^1\times {\mathrm{211}}^1\times {\mathrm{643}}^1$

素因数の和:868

約数の個数: 32

約数和(自身を含む): 32766720

約数和(自身を除く): 14450865

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 211, 633, 643, 1055, 1899, 1929, 3165, 3215, 5697, 5787, 9495, 9645, 17361, 28485, 28935, 86805, 135673, 407019, 678365, 1221057, 2035095, 3663171, 6105285, 18315855]

約数ペア:

[(1, 18315855), (3, 6105285), (5, 3663171), (9, 2035095), (15, 1221057), (27, 678365), (45, 407019), (135, 135673), (211, 86805), (633, 28935), (643, 28485), (1055, 17361), (1899, 9645), (1929, 9495), (3165, 5787), (3215, 5697)]