20987704

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{138077}}^1$

素因数の和:138102

約数の個数: 16

約数和(自身を含む): 41423400

約数和(自身を除く): 20435696

約数列:

[1, 2, 4, 8, 19, 38, 76, 152, 138077, 276154, 552308, 1104616, 2623463, 5246926, 10493852, 20987704]

約数ペア:

[(1, 20987704), (2, 10493852), (4, 5246926), (8, 2623463), (19, 1104616), (38, 552308), (76, 276154), (152, 138077)]