421728039

素因数分解:

$3^4\times {\mathrm{47}}^1\times {\mathrm{110777}}^1$

素因数の和:110836

約数の個数: 20

約数和(自身を含む): 643398624

約数和(自身を除く): 221670585

約数列:

[1, 3, 9, 27, 47, 81, 141, 423, 1269, 3807, 110777, 332331, 996993, 2990979, 5206519, 8972937, 15619557, 46858671, 140576013, 421728039]

約数ペア:

[(1, 421728039), (3, 140576013), (9, 46858671), (27, 15619557), (47, 8972937), (81, 5206519), (141, 2990979), (423, 996993), (1269, 332331), (3807, 110777)]