20878325

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{227}}^1\times {\mathrm{283}}^1$

素因数の和:533

約数の個数: 24

約数和(自身を含む): 28102368

約数和(自身を除く): 7224043

約数列:

[1, 5, 13, 25, 65, 227, 283, 325, 1135, 1415, 2951, 3679, 5675, 7075, 14755, 18395, 64241, 73775, 91975, 321205, 835133, 1606025, 4175665, 20878325]

約数ペア:

[(1, 20878325), (5, 4175665), (13, 1606025), (25, 835133), (65, 321205), (227, 91975), (283, 73775), (325, 64241), (1135, 18395), (1415, 14755), (2951, 7075), (3679, 5675)]