216780513921

素因数分解:

$3^4\times {\mathrm{239}}^1\times {\mathrm{11197919}}^1$

素因数の和:11198170

約数の個数: 20

約数和(自身を含む): 325187596800

約数和(自身を除く): 108407082879

約数列:

[1, 3, 9, 27, 81, 239, 717, 2151, 6453, 19359, 11197919, 33593757, 100781271, 302343813, 907031439, 2676302641, 8028907923, 24086723769, 72260171307, 216780513921]

約数ペア:

[(1, 216780513921), (3, 72260171307), (9, 24086723769), (27, 8028907923), (81, 2676302641), (239, 907031439), (717, 302343813), (2151, 100781271), (6453, 33593757), (19359, 11197919)]