20988178

素因数分解:

$2^1\times {\mathrm{31}}^1\times {\mathrm{503}}^1\times {\mathrm{673}}^1$

素因数の和:1209

約数の個数: 16

約数和(自身を含む): 32610816

約数和(自身を除く): 11622638

約数列:

[1, 2, 31, 62, 503, 673, 1006, 1346, 15593, 20863, 31186, 41726, 338519, 677038, 10494089, 20988178]

約数ペア:

[(1, 20988178), (2, 10494089), (31, 677038), (62, 338519), (503, 41726), (673, 31186), (1006, 20863), (1346, 15593)]