20947004

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{331}}^1\times {\mathrm{1217}}^1$

素因数の和:1565

約数の個数: 24

約数和(自身を含む): 39628848

約数和(自身を除く): 18681844

約数列:

[1, 2, 4, 13, 26, 52, 331, 662, 1217, 1324, 2434, 4303, 4868, 8606, 15821, 17212, 31642, 63284, 402827, 805654, 1611308, 5236751, 10473502, 20947004]

約数ペア:

[(1, 20947004), (2, 10473502), (4, 5236751), (13, 1611308), (26, 805654), (52, 402827), (331, 63284), (662, 31642), (1217, 17212), (1324, 15821), (2434, 8606), (4303, 4868)]