20920398

素因数分解:

$2^1\times 3^1\times {\mathrm{163}}^1\times {\mathrm{21391}}^1$

素因数の和:21559

約数の個数: 16

約数和(自身を含む): 42099456

約数和(自身を除く): 21179058

約数列:

[1, 2, 3, 6, 163, 326, 489, 978, 21391, 42782, 64173, 128346, 3486733, 6973466, 10460199, 20920398]

約数ペア:

[(1, 20920398), (2, 10460199), (3, 6973466), (6, 3486733), (163, 128346), (326, 64173), (489, 42782), (978, 21391)]