19981424

素因数分解:

$2^4\times {\mathrm{53}}^1\times {\mathrm{23563}}^1$

素因数の和:23624

約数の個数: 20

約数和(自身を含む): 39446136

約数和(自身を除く): 19464712

約数列:

[1, 2, 4, 8, 16, 53, 106, 212, 424, 848, 23563, 47126, 94252, 188504, 377008, 1248839, 2497678, 4995356, 9990712, 19981424]

約数ペア:

[(1, 19981424), (2, 9990712), (4, 4995356), (8, 2497678), (16, 1248839), (53, 377008), (106, 188504), (212, 94252), (424, 47126), (848, 23563)]