21801273

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{431}}^1\times {\mathrm{1297}}^1$

素因数の和:1744

約数の個数: 16

約数和(自身を含む): 31401216

約数和(自身を除く): 9599943

約数列:

[1, 3, 13, 39, 431, 1293, 1297, 3891, 5603, 16809, 16861, 50583, 559007, 1677021, 7267091, 21801273]

約数ペア:

[(1, 21801273), (3, 7267091), (13, 1677021), (39, 559007), (431, 50583), (1293, 16861), (1297, 16809), (3891, 5603)]