213512215

素因数分解:

$5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{41}}^2\times {\mathrm{191}}^1$

素因数の和:304

約数の個数: 48

約数和(自身を含む): 317583360

約数和(自身を除く): 104071145

約数列:

[1, 5, 7, 19, 35, 41, 95, 133, 191, 205, 287, 665, 779, 955, 1337, 1435, 1681, 3629, 3895, 5453, 6685, 7831, 8405, 11767, 18145, 25403, 27265, 31939, 39155, 54817, 58835, 127015, 148789, 159695, 223573, 274085, 321071, 743945, 1041523, 1117865, 1605355, 2247497, 5207615, 6100349, 11237485, 30501745, 42702443, 213512215]

約数ペア:

[(1, 213512215), (5, 42702443), (7, 30501745), (19, 11237485), (35, 6100349), (41, 5207615), (95, 2247497), (133, 1605355), (191, 1117865), (205, 1041523), (287, 743945), (665, 321071), (779, 274085), (955, 223573), (1337, 159695), (1435, 148789), (1681, 127015), (3629, 58835), (3895, 54817), (5453, 39155), (6685, 31939), (7831, 27265), (8405, 25403), (11767, 18145)]