28267065

素因数分解:

$3^2\times 5^1\times {\mathrm{157}}^1\times {\mathrm{4001}}^1$

素因数の和:4169

約数の個数: 24

約数和(自身を含む): 49320648

約数和(自身を除く): 21053583

約数列:

[1, 3, 5, 9, 15, 45, 157, 471, 785, 1413, 2355, 4001, 7065, 12003, 20005, 36009, 60015, 180045, 628157, 1884471, 3140785, 5653413, 9422355, 28267065]

約数ペア:

[(1, 28267065), (3, 9422355), (5, 5653413), (9, 3140785), (15, 1884471), (45, 628157), (157, 180045), (471, 60015), (785, 36009), (1413, 20005), (2355, 12003), (4001, 7065)]