20338591

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{4217}}^1$

素因数の和:4290

約数の個数: 16

約数和(自身を含む): 25510464

約数和(自身を除く): 5171873

約数列:

[1, 7, 13, 53, 91, 371, 689, 4217, 4823, 29519, 54821, 223501, 383747, 1564507, 2905513, 20338591]

約数ペア:

[(1, 20338591), (7, 2905513), (13, 1564507), (53, 383747), (91, 223501), (371, 54821), (689, 29519), (4217, 4823)]