21007768

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{138209}}^1$

素因数の和:138234

約数の個数: 16

約数和(自身を含む): 41463000

約数和(自身を除く): 20455232

約数列:

[1, 2, 4, 8, 19, 38, 76, 152, 138209, 276418, 552836, 1105672, 2625971, 5251942, 10503884, 21007768]

約数ペア:

[(1, 21007768), (2, 10503884), (4, 5251942), (8, 2625971), (19, 1105672), (38, 552836), (76, 276418), (152, 138209)]