640072

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{4211}}^1$

素因数の和:4236

約数の個数: 16

約数和(自身を含む): 1263600

約数和(自身を除く): 623528

約数列:

[1, 2, 4, 8, 19, 38, 76, 152, 4211, 8422, 16844, 33688, 80009, 160018, 320036, 640072]

約数ペア:

[(1, 640072), (2, 320036), (4, 160018), (8, 80009), (19, 33688), (38, 16844), (76, 8422), (152, 4211)]