221424273

素因数分解:

$3^6\times 7^1\times {\mathrm{43391}}^1$

素因数の和:43416

約数の個数: 28

約数和(自身を含む): 379419648

約数和(自身を除く): 157995375

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 243, 567, 729, 1701, 5103, 43391, 130173, 303737, 390519, 911211, 1171557, 2733633, 3514671, 8200899, 10544013, 24602697, 31632039, 73808091, 221424273]

約数ペア:

[(1, 221424273), (3, 73808091), (7, 31632039), (9, 24602697), (21, 10544013), (27, 8200899), (63, 3514671), (81, 2733633), (189, 1171557), (243, 911211), (567, 390519), (729, 303737), (1701, 130173), (5103, 43391)]