21531455

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{5843}}^1$

素因数の和:5926

約数の個数: 16

約数和(自身を含む): 28612224

約数和(自身を除く): 7080769

約数列:

[1, 5, 11, 55, 67, 335, 737, 3685, 5843, 29215, 64273, 321365, 391481, 1957405, 4306291, 21531455]

約数ペア:

[(1, 21531455), (5, 4306291), (11, 1957405), (55, 391481), (67, 321365), (335, 64273), (737, 29215), (3685, 5843)]