21216837

素因数分解:

$3^1\times {\mathrm{61}}^1\times {\mathrm{269}}^1\times {\mathrm{431}}^1$

素因数の和:764

約数の個数: 16

約数和(自身を含む): 28926720

約数和(自身を除く): 7709883

約数列:

[1, 3, 61, 183, 269, 431, 807, 1293, 16409, 26291, 49227, 78873, 115939, 347817, 7072279, 21216837]

約数ペア:

[(1, 21216837), (3, 7072279), (61, 347817), (183, 115939), (269, 78873), (431, 49227), (807, 26291), (1293, 16409)]