40077790

素因数分解:

$2^1\times 5^1\times {\mathrm{1987}}^1\times {\mathrm{2017}}^1$

素因数の和:4011

約数の個数: 16

約数和(自身を含む): 72212112

約数和(自身を除く): 32134322

約数列:

[1, 2, 5, 10, 1987, 2017, 3974, 4034, 9935, 10085, 19870, 20170, 4007779, 8015558, 20038895, 40077790]

約数ペア:

[(1, 40077790), (2, 20038895), (5, 8015558), (10, 4007779), (1987, 20170), (2017, 19870), (3974, 10085), (4034, 9935)]