20801157052

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{1559}}^1\times {\mathrm{256589}}^1$

素因数の和:258165

約数の個数: 24

約数和(自身を含む): 39227479200

約数和(自身を除く): 18426322148

約数列:

[1, 2, 4, 13, 26, 52, 1559, 3118, 6236, 20267, 40534, 81068, 256589, 513178, 1026356, 3335657, 6671314, 13342628, 400022251, 800044502, 1600089004, 5200289263, 10400578526, 20801157052]

約数ペア:

[(1, 20801157052), (2, 10400578526), (4, 5200289263), (13, 1600089004), (26, 800044502), (52, 400022251), (1559, 13342628), (3118, 6671314), (6236, 3335657), (20267, 1026356), (40534, 513178), (81068, 256589)]