21558381

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{6211}}^1$

素因数の和:6316

約数の個数: 16

約数和(自身を含む): 31308480

約数和(自身を除く): 9750099

約数列:

[1, 3, 13, 39, 89, 267, 1157, 3471, 6211, 18633, 80743, 242229, 552779, 1658337, 7186127, 21558381]

約数ペア:

[(1, 21558381), (3, 7186127), (13, 1658337), (39, 552779), (89, 242229), (267, 80743), (1157, 18633), (3471, 6211)]