129464840

素因数分解:

$2^3\times 5^1\times {\mathrm{3236621}}^1$

素因数の和:3236632

約数の個数: 16

約数和(自身を含む): 291295980

約数和(自身を除く): 161831140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 3236621, 6473242, 12946484, 16183105, 25892968, 32366210, 64732420, 129464840]

約数ペア:

[(1, 129464840), (2, 64732420), (4, 32366210), (5, 25892968), (8, 16183105), (10, 12946484), (20, 6473242), (40, 3236621)]