19968615

素因数分解:

$3^2\times 5^1\times {\mathrm{457}}^1\times {\mathrm{971}}^1$

素因数の和:1439

約数の個数: 24

約数和(自身を含む): 34723728

約数和(自身を除く): 14755113

約数列:

[1, 3, 5, 9, 15, 45, 457, 971, 1371, 2285, 2913, 4113, 4855, 6855, 8739, 14565, 20565, 43695, 443747, 1331241, 2218735, 3993723, 6656205, 19968615]

約数ペア:

[(1, 19968615), (3, 6656205), (5, 3993723), (9, 2218735), (15, 1331241), (45, 443747), (457, 43695), (971, 20565), (1371, 14565), (2285, 8739), (2913, 6855), (4113, 4855)]