129449720

素因数分解:

$2^3\times 5^1\times {\mathrm{3236243}}^1$

素因数の和:3236254

約数の個数: 16

約数和(自身を含む): 291261960

約数和(自身を除く): 161812240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 3236243, 6472486, 12944972, 16181215, 25889944, 32362430, 64724860, 129449720]

約数ペア:

[(1, 129449720), (2, 64724860), (4, 32362430), (5, 25889944), (8, 16181215), (10, 12944972), (20, 6472486), (40, 3236243)]