81127960

素因数分解:

$2^3\times 5^1\times {\mathrm{2028199}}^1$

素因数の和:2028210

約数の個数: 16

約数和(自身を含む): 182538000

約数和(自身を除く): 101410040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 2028199, 4056398, 8112796, 10140995, 16225592, 20281990, 40563980, 81127960]

約数ペア:

[(1, 81127960), (2, 40563980), (4, 20281990), (5, 16225592), (8, 10140995), (10, 8112796), (20, 4056398), (40, 2028199)]