217610920

素因数分解:

$2^3\times 5^1\times {\mathrm{5440273}}^1$

素因数の和:5440284

約数の個数: 16

約数和(自身を含む): 489624660

約数和(自身を除く): 272013740

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 5440273, 10880546, 21761092, 27201365, 43522184, 54402730, 108805460, 217610920]

約数ペア:

[(1, 217610920), (2, 108805460), (4, 54402730), (5, 43522184), (8, 27201365), (10, 21761092), (20, 10880546), (40, 5440273)]