42399820

素因数分解:

$2^2\times 5^1\times {\mathrm{107}}^1\times {\mathrm{19813}}^1$

素因数の和:19929

約数の個数: 24

約数和(自身を含む): 89876304

約数和(自身を除く): 47476484

約数列:

[1, 2, 4, 5, 10, 20, 107, 214, 428, 535, 1070, 2140, 19813, 39626, 79252, 99065, 198130, 396260, 2119991, 4239982, 8479964, 10599955, 21199910, 42399820]

約数ペア:

[(1, 42399820), (2, 21199910), (4, 10599955), (5, 8479964), (10, 4239982), (20, 2119991), (107, 396260), (214, 198130), (428, 99065), (535, 79252), (1070, 39626), (2140, 19813)]