20407390

素因数分解:

$2^1\times 5^1\times {\mathrm{103}}^1\times {\mathrm{19813}}^1$

素因数の和:19923

約数の個数: 16

約数和(自身を含む): 37091808

約数和(自身を除く): 16684418

約数列:

[1, 2, 5, 10, 103, 206, 515, 1030, 19813, 39626, 99065, 198130, 2040739, 4081478, 10203695, 20407390]

約数ペア:

[(1, 20407390), (2, 10203695), (5, 4081478), (10, 2040739), (103, 198130), (206, 99065), (515, 39626), (1030, 19813)]