19781298

素因数分解:

$2^1\times 3^2\times {\mathrm{557}}^1\times {\mathrm{1973}}^1$

素因数の和:2538

約数の個数: 24

約数和(自身を含む): 42958188

約数和(自身を除く): 23176890

約数列:

[1, 2, 3, 6, 9, 18, 557, 1114, 1671, 1973, 3342, 3946, 5013, 5919, 10026, 11838, 17757, 35514, 1098961, 2197922, 3296883, 6593766, 9890649, 19781298]

約数ペア:

[(1, 19781298), (2, 9890649), (3, 6593766), (6, 3296883), (9, 2197922), (18, 1098961), (557, 35514), (1114, 17757), (1671, 11838), (1973, 10026), (3342, 5919), (3946, 5013)]