30720725

素因数分解:

$5^2\times 7^1\times {\mathrm{349}}^1\times {\mathrm{503}}^1$

素因数の和:869

約数の個数: 24

約数和(自身を含む): 43747200

約数和(自身を除く): 13026475

約数列:

[1, 5, 7, 25, 35, 175, 349, 503, 1745, 2443, 2515, 3521, 8725, 12215, 12575, 17605, 61075, 88025, 175547, 877735, 1228829, 4388675, 6144145, 30720725]

約数ペア:

[(1, 30720725), (5, 6144145), (7, 4388675), (25, 1228829), (35, 877735), (175, 175547), (349, 88025), (503, 61075), (1745, 17605), (2443, 12575), (2515, 12215), (3521, 8725)]