1780974321

素因数分解:

$3^1\times 7^1\times {\mathrm{431}}^1\times {\mathrm{196771}}^1$

素因数の和:197212

約数の個数: 16

約数和(自身を含む): 2720176128

約数和(自身を除く): 939201807

約数列:

[1, 3, 7, 21, 431, 1293, 3017, 9051, 196771, 590313, 1377397, 4132191, 84808301, 254424903, 593658107, 1780974321]

約数ペア:

[(1, 1780974321), (3, 593658107), (7, 254424903), (21, 84808301), (431, 4132191), (1293, 1377397), (3017, 590313), (9051, 196771)]