639530954

素因数分解:

$2^1\times {\mathrm{61}}^1\times {\mathrm{73}}^1\times {\mathrm{71809}}^1$

素因数の和:71945

約数の個数: 16

約数和(自身を含む): 988392840

約数和(自身を除く): 348861886

約数列:

[1, 2, 61, 73, 122, 146, 4453, 8906, 71809, 143618, 4380349, 5242057, 8760698, 10484114, 319765477, 639530954]

約数ペア:

[(1, 639530954), (2, 319765477), (61, 10484114), (73, 8760698), (122, 5242057), (146, 4380349), (4453, 143618), (8906, 71809)]