19757140

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{75989}}^1$

素因数の和:76011

約数の個数: 24

約数和(自身を含む): 44682120

約数和(自身を除く): 24924980

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 75989, 151978, 303956, 379945, 759890, 987857, 1519780, 1975714, 3951428, 4939285, 9878570, 19757140]

約数ペア:

[(1, 19757140), (2, 9878570), (4, 4939285), (5, 3951428), (10, 1975714), (13, 1519780), (20, 987857), (26, 759890), (52, 379945), (65, 303956), (130, 151978), (260, 75989)]