18670281

素因数分解:

$3^1\times 7^1\times {\mathrm{197}}^1\times {\mathrm{4513}}^1$

素因数の和:4720

約数の個数: 16

約数和(自身を含む): 28600704

約数和(自身を除く): 9930423

約数列:

[1, 3, 7, 21, 197, 591, 1379, 4137, 4513, 13539, 31591, 94773, 889061, 2667183, 6223427, 18670281]

約数ペア:

[(1, 18670281), (3, 6223427), (7, 2667183), (21, 889061), (197, 94773), (591, 31591), (1379, 13539), (4137, 4513)]