28218970

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{217069}}^1$

素因数の和:217089

約数の個数: 16

約数和(自身を含む): 54701640

約数和(自身を除く): 26482670

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 217069, 434138, 1085345, 2170690, 2821897, 5643794, 14109485, 28218970]

約数ペア:

[(1, 28218970), (2, 14109485), (5, 5643794), (10, 2821897), (13, 2170690), (26, 1085345), (65, 434138), (130, 217069)]