18121649

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{223}}^1$

素因数の和:309

約数の個数: 32

約数和(自身を含む): 24084480

約数和(自身を除く): 5962831

約数列:

[1, 7, 13, 19, 47, 91, 133, 223, 247, 329, 611, 893, 1561, 1729, 2899, 4237, 4277, 6251, 10481, 11609, 20293, 29659, 55081, 73367, 81263, 136253, 199139, 385567, 953771, 1393973, 2588807, 18121649]

約数ペア:

[(1, 18121649), (7, 2588807), (13, 1393973), (19, 953771), (47, 385567), (91, 199139), (133, 136253), (223, 81263), (247, 73367), (329, 55081), (611, 29659), (893, 20293), (1561, 11609), (1729, 10481), (2899, 6251), (4237, 4277)]