28210390

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{217003}}^1$

素因数の和:217023

約数の個数: 16

約数和(自身を含む): 54685008

約数和(自身を除く): 26474618

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 217003, 434006, 1085015, 2170030, 2821039, 5642078, 14105195, 28210390]

約数ペア:

[(1, 28210390), (2, 14105195), (5, 5642078), (10, 2821039), (13, 2170030), (26, 1085015), (65, 434006), (130, 217003)]