21255195

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{109001}}^1$

素因数の和:109022

約数の個数: 16

約数和(自身を含む): 36624672

約数和(自身を除く): 15369477

約数列:

[1, 3, 5, 13, 15, 39, 65, 195, 109001, 327003, 545005, 1417013, 1635015, 4251039, 7085065, 21255195]

約数ペア:

[(1, 21255195), (3, 7085065), (5, 4251039), (13, 1635015), (15, 1417013), (39, 545005), (65, 327003), (195, 109001)]