21887241

素因数分解:

$3^1\times {\mathrm{71}}^1\times {\mathrm{211}}^1\times {\mathrm{487}}^1$

素因数の和:772

約数の個数: 16

約数和(自身を含む): 29795328

約数和(自身を除く): 7908087

約数列:

[1, 3, 71, 211, 213, 487, 633, 1461, 14981, 34577, 44943, 102757, 103731, 308271, 7295747, 21887241]

約数ペア:

[(1, 21887241), (3, 7295747), (71, 308271), (211, 103731), (213, 102757), (487, 44943), (633, 34577), (1461, 14981)]