21300237

素因数分解:

$3^2\times 7^1\times {\mathrm{557}}^1\times {\mathrm{607}}^1$

素因数の和:1177

約数の個数: 24

約数和(自身を含む): 35283456

約数和(自身を除く): 13983219

約数列:

[1, 3, 7, 9, 21, 63, 557, 607, 1671, 1821, 3899, 4249, 5013, 5463, 11697, 12747, 35091, 38241, 338099, 1014297, 2366693, 3042891, 7100079, 21300237]

約数ペア:

[(1, 21300237), (3, 7100079), (7, 3042891), (9, 2366693), (21, 1014297), (63, 338099), (557, 38241), (607, 35091), (1671, 12747), (1821, 11697), (3899, 5463), (4249, 5013)]